New 0.7x Reducer Hands on / Review (Celestron 9.25" Edge HD)
ฝัง
- เผยแพร่เมื่อ 10 ก.ย. 2018
- Celestron finally released their 0.7x reducer so I gave it a spin! Also a bit of an overview of the Celestron 9.25” Edge HD generally and some behind the scenes for imaging the Helix Nebula (Caldwell 63).
This video is sponsored by Bintel - Australia’s Largest Binocular & Telescope Shop : www.bintel.com.au
Support my alcoholism by getting some Star Stuff stuff:
/ @dylanodonnell
Dylan's Telescopes, Cameras & Equipment
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Celestron RASA 8" Telescope
amzn.to/3G4nlbP
Celestron NexYZ 3-Axis Smartphone Adapter
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Skywatcher EQ8Rh Pro Mount
Usa : bit.ly/2NMD1em
Aus : bit.ly/3dxdRv1
Celestron CGX Mount
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Celestron RASA F2 11" Telescope
amzn.to/3ABsVBz
Celestron 11" Edge HD
bit.ly/3eaxJRl
QHY268M Mono CMOS Camera
bit.ly/3dOFgbx
Lunt40mm Solar Telescope
bit.ly/39ggrTW
Sky-Watcher Star Adventurer 2i Pro Pack
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ZWO ASI 174MM (Planetary / Solar Camera)
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ZWO ASI 120MM. (Guide Camera)
bit.ly/31bwspA
ZWO ASI 1600MM (Deep Space Camera)
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Celestron 0.7x reducer for 11" Edge HD
bit.ly/379s0LI
Celestron 0.7x reducer for 9.25” Edge HD
bit.ly/351togR
Celestron 9.25” Edge HD
bit.ly/379Nqsj
Canon 6D mkII DSLR
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Tokina 16-28mm Lens
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Canon EF 16-35mm f/2.8L III USM Ultra Wide Angle Zoom Full Frame
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Canon EF 100-400mm f/4.5-5.6L IS II USM Lens
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Dylan’s links
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PATREON : / dylanodonnell
WEB : deography.com
FACEBOOK : / dylanodonnell
TWITTER : / erfmufn
INSTAGRAM : / dylan_odonnell_
Intro Music - "Moving the Ocean (Aerologic Edit)" by Blastculture. - วิทยาศาสตร์และเทคโนโลยี
![[Full Episode] MasterChef Junior Thailand มาสเตอร์เชฟ จูเนียร์ ประเทศไทย Season 3 Episode 6](http://i.ytimg.com/vi/CVUx09Rx0-M/mqdefault.jpg)
Please note, Dylan - in all your reviews/videos of the reducer you have never mentioned that under normal conditions the reducer sticks solidly to the backing structure and cannot be removed. It is essential for new users to put a layer of lubricant on the external threads of the OTA before fitting the reducer otherwise they will never get it off without the most horrendous effort. Mine was stuck on throughout the close Mars opposition and could not be removed until I got specialist equipment. Very frustrating.
Another excellent video Dylan. Really impressive work on the advertising video for Bintel. Congrats on picking up the .7X reducer. My "retirement setup" will someday consist of the C11 Edge or C14 Edge with a .7X reducer. Keep up the great work!
Scott
Good review Dylan. And your wife plays the violin really well. Awesome
Love the ending.
Great review. Amazing that you got 4 asteroids the picture. Thank you for the candid reviews!!
Amazing opening video! Great quality and composition!
Thanks I always enjoy your videos. Very informative and clearly explained.
Cheers Wolfie!
Bintel ad is superb! I enjoy your videos. Thank you.
Was actually trying to pay attention but your sound effects kept making me laugh. Nearly spilled my coffee.
Short, images are well to illustrate what you're talking about, niw clear hiw and what reducer is used for. Great work, thanks👍
Dylan, Thanks for the detailed review of .7x reducer. I might check into it. I love the commercial for Bintel. Very thoughtful and interesting
Thanks Ray! I watched your focuser video recently 👍🏼
@@DylanODonnell thanks.
great Bintel Ad. well done
thanks for great review!
Wow your videos rock. Hope to see you at NEAF this year.
Hi Tom! Did you come say hi? I had the BEST time. Recap vid dropping in the next hour :)
Binge-watching older St⭐️ r Stuff videos is a clear sign that skies are not clear and the weather‘s shoddy up here..🤪
Nice video, thanks again for sharing and enlightening us, Dylan!
The focal reducer is def on the list for my tiny 8” Edge, really want to tickle as much as possible out of this OTA. Same for the mount, but that is a different story..
Hehe thanks Jeff!
LOL, every night...not here unfortunately. Happy for you guys though! Gonna go now hand have a little cry. :) definitely a reason to move to Australia.
thank you for the info keep up the work were watching
Hey thanks Danny! New vid today.
WOOOOOO! Another vid!
BobertTheBob15 hehe
Great piece of kit to have 👍
Another tool in the kit!
Thanks for the review mate. I'm tossing up the idea of getting one for my 11 but wow they are not cheap!
They are good to have for options .. the smaller the focal length / f-number the easier astrophotography gets :)
Discovered this awesome channel via the Astro Imaging Channel.
Oh cool.. thanks SpaceTV! Love that chan.
Nice review. Been wondering about this product. Took Celestron long enough to make one.
Yeh was a strange omission in the product line wasn't it ??
Super Video Gratulations ;)
Great videos. You have some good skies for urban area
Chris 570 thx! Pretty lucky here on the edge of Australia
Great video...really enjoyed it....thank you....
Cheers Chris!
Excellent shot Dylan, and I never knew those were asteroids showing up on my images.
They are indeed! I'd like to do a video on how to identify them eventually. It's a bit fiddly in the astrometrica software I've been using and I'd love to find a better alternative.
@@DylanODonnell hi Dylan, how many exposures (and duration) did you take in order to see these asteroids? I find this very fascinating. Thx
g`day dylan great video on the focal reducer i seen the new bintel add a couple of days ago as a youtube pre main feature add well done thanks for the reducer video as i have been thinking about the reducer and hyperstar for my 8"edgeHD ..... am i right thinking the vizual back will not fit on to the reducer and you have to get the t adapter and t ring .. sold separately to the reducer .. as i don't have either and i am trying to weigh up the costs of getting a wider field (and faster exposure times) from the 8" sct FOV at F10 that i am using now the one for the 8" has been out for a while and might be different(smaller) and you can use the old visual back ???? i dont know ... thanks again for the test of the celestron .07 x focal reducer its arrived at a very handy time in the decision process for me.... i liked the first light warts and all aspect of the test and i hope you can do another video when you have had time to play with it to sort the vignetting / spacing / weather issues. to see the true potential of the celestron 0.7 focal reducer ...loved the violin on the clean the sensor scene lol i feel that way when i clean the corrector plate .. not brave enough for the camera sensor yet lol
cheers
james D
Hi Dylan. Great video, as always ! How do you know those are asteroids and not satellites? Thanks !
My guess is a satellite would travel much farther through the image because it's so much closer.
Great video
Thanks Andre!
Do you feel the guide scope is adequate for guiding when @ the native focal length, or do you think an OAG would be a better solution?
The Edge HD is also great with hyperwide eyepieces, loved my 8" with ES100's. Sorry visual astronomy, I went there ;)
Haha it does look cool.. when I look :)
Hi Dylan - with a non Edge SCT - is field curvature worse when running with a reducer (f6.3) or worse when Barlowed up, for high power on planets? Ps does curvature bother you visually or just photographically? Would love to get down there for a look at
'47 Tucane' and 'Omega Centauri'
Clear Skies!
🤔 Excellent video. Love the truth at the end.
I'm having trouble finding information the thread size of the camera side of the reducer. What size extension tubes does it accept?
Hy Dylan. TZhx for this video, is very helpful. Could work the 9.25 HD writh with an AVX Mount too?thx for your Anwser. Cheers Attila
Awesome vids mate! Thoughts between Hyperstar and the 0.7x reducer on an EdgeHD9.25? Would the Hyperstar negate the need for the reducer in terms of FOV? Or is having 0.7x a good option for certain objects where there Hyperstar would be too "zoomed out"?
I want to know the answer to this question too. Its a long shot but did you ever get an answer over the past 4 years?
I don't know much and I am confuse why the image is colourless. Do we see black and white in this telescope?
Good video. When are you going to tell us about replacing your POD dome? Or did I miss something?
Yeh I have a stack of videos I want to make! That's one of them :)
I have an 8-inch EdgeHD and the .7X Celestron Reducer for it. It works very well visually with ultra wide angle eyepieces as long as they are 25mm and less in focal length. It does work well photographically but an 8-inch EdgeHD and the .7X reducer will not cover a full frame sensor or 35mm film frame. It will work very well with an APS sized chip. So far I am using it visually and sometimes with lunar imaging when I want a wider than usual field of view with my ZWO ASI 290MC camera. When I get a camera suited for deep sky imaging I'll be using the reducer most of the time.
Yeh pretty much a must have item for the SCTs!
Astrophotography is a marathon - good one!
i love ur sense of humor
I'm glad someone does :)
Me too, one of the reasons I subscribed ^^
Great! I'll take this as permission to turn this into a comedy channel :)
Hey Dylan thanks for entertainment.
How did you watch your subs like a video to see the asteroids?
Hi Dylan! Great video! As I heard you used the Optec Lepus reducer, I had to ask:
At the recommended 105 mm backfocus (at least for my edge 8 HD scope), I never see round stars with the Lepus on the edges. Stars are a little stretched as in your video. Is this normal or maybe I got a bad reducer? Thanks!
I think it's "normal" for the Lepus .. The Celestron one is indeed a little better (which is hardly surprising given it's made by the same people as the scope!)
@@DylanODonnell Thanks for clearing that up! I´m in the middle of the city hitting Rosette nebula right now! :D
Oh great! Hope you're getting some good frames :)
Do you think the stated 42mm corrected field for this reducer is right
Which camera you used
Awesome vid. Any idea when the new RASA 36s will be in Australia? Just for fun, as a refractor guy...what would you prefer? That scope or a Tak FSQ130?
I'm definitely a reflector guy, and no idea on the availability of 36's yet BUT I won't get one only because I don't *really* need it with the scopes I have. It would be a cool new FOV though for some wider stuff and big mosaics of massive regions.
Dylan,
Cool equipment video. I got a 925 Edge last year but was then bummed I could not find a FR. Eventually found the Optec, which seems to work fine; don't like the loose lens assembly and the special adapters, plus it can't be used with eyepieces as far as I know. Have you posted any pics with the Celestron 0.7 FR? Would love to take a look.
Asteroids or satellites? Quite a few fast objects for one session.
Thanks for sharing.
John
John Adastra hi John! The helix in the video is the only image taken with the 0.7x so far .. and agree with you re the optec design. The timeframe in the animation is about an hour so I would assume asteroids (I’ll solve them astrometrically later) as satellites typically whiz by faster, brighter at lower orbits.
Have seen some geosynchronous satellites move through an object's FOV, especially when close to the celestial equator. But I think those would just move at sidereal rate and would all move in one direction. So probably asteroids, how fortuitus!
Bravo Bro
Yes I was the guy who told you about my New Zealand Milky Way picture from Wellington.
ZWO EAF Bracket for Celestron C8/C9.25/C11/C14
For Celestron EdgeHD 9.25" and the Celestron .7x Reducer Lens for EdgeHD 925 # 94245 you will have to file down the rounded end of the Bracket that mounts to the Telescope Focus. If not you cannot screw on the Reducer and when you have the Reducer installed you cannot mount the bracket to the Telescope Focus, 1/16 of an inch to big.
Dylan, did you maintain back focus at exactly 146mm from the camera-side of the reducer to the camera sensor, or did adding that filter wheel push the back focus out past 146mm? I hear that if you are too far either side of 146mm you'll get bloated stars off-axis.
Thanks Ross.. I paid no attention to correct BFD at all as I could only use the T-adapter I had on hand .. The stars didn't seem very different with or without the filterwheel though but it is something I'll measure properly!
Thank You for your review.
I got a chance to test my 0.7 reducer two nights ago with my full frame Canon Eos5D Mk2.
Although the sharpness seems ok, I am somewhat puzzled by the results:
* I got a severe vignetting with a narrower image scale and is not centered (shifted towards the left side). I would say that it is completely acceptable only inside a 24 mm circle.
* Comparing images taken with and without the reducer, I got an image scale of 0.78x, quite a difference with the specified 0.7x!
* Celestron also specifies that you gain a full step in exposure time but my results show that it is only 0.35 steps!
I know that you mention a certain amount of vignetting in your video but your camera might have a smaller sensor compared to a full frame DSLR.
Would you have any comments on any of my issues above.
Thank you
It's the curse of having a big chip, I agree! As astrophotography gains in popularity all the vendors are having to design OTAs and accessories with larger chips in mind. Those results with the F-ratio are interesting .. I've yet to try a similar test.
Expensive but worth it. Having a RASA rather pre-empts owning a reducer for 9.25 however. FOV in a RASA beats it at F2 hands up. Doesn't it? Another issue with vignetting can be the T adaptor itself. The Celestron T adaptor at prime focus comes in various diameters to screw on the SCT, at least for 11 inch and 14 inch OTAs.
That's true! Finding the perfect back focal distance (BFD) would be ideal. The 11" RASA f2 is about half the focal length of the 9.25" at F7 so this is a nice configuration to have to get up close to small stuff. The horsehead would look great with this setup particularly.
Hey Dylan. Looks like you actually caught 5 asteroids in that last shot. While you were showing the first two, there was another one above them!
Did you have a finder scope attached?. thought that you use only the connection between mount and phd2?. Sorry Im a beginner doesn't know alot.
Hi Dylan What Thousand Oaks Solar Filter will work with this scope.
Hello... I have a pair of 8" ota's .. Celestron HD and GSO RC . How much can I reduce the focal lenght until I start to notice vignetting in a FF sensor ?
Remember, everything is meaningless and we are all gonna die.. lol Good job on the Bintel promo and very enjoyable upload as usual!
Hehe thanks mate
We live in a holographic universe Dude, atom is empty space.
Everything is empty space, even Trump! LOL!
Ashes to ashes, dust to dust!
Now take a picture of that?
He's not wrong lol
Do you recommend the non edge version
Question why get rasa when u can get edgehd and add hyperstar?
What t adapter do I use with .7 reducer lens on edgehd 9.25 and canon t7i please
Hi Dylan, excellent video !!, I want to update my telescope and I can't decide between the edge HD 8" and the 9.25", my main objective is to photograph small galaxies, which one would you recommend me more? There will be a lot of difference between the image obtained with an 8" vs 9.25"?
It’s not a huge difference but I’d advocate for the 9.25” if you can afford it.
@@DylanODonnell Thank you very much, I will do that !!
Where did you buy the focal reducer? I couldn't find it
@@clla3393 I got it from OPT.
Looks like there's another asteroid kinda at the top-middle of the screen at 8:37?
To see the Universe "every night" I hope Bintel sells radioastronomy gear.
I would not consider those stars to be acceptable myself, maybe get a tilt adapter?
Nice work❤❤❤, where are you from
and the rest of the vid was good too. cheers
Love it funny fella
Some will die sooner and some will die later ! ;-) LOL Great stuff!! BTW I wish we did not have to deal with the Geo engineering issue but this has become increasingly worse over the last year in the SW part of the US. Very frustrating trying to find a clear night anymore! All the best from Utah!!
Hehe thanks mate! Narrowband might be the way to go with all that LP .. I only have sea mist to deal with here thankfully. Good luck!
Awesome,... I need to learn about focal lengths and ISO, which I know is for light? Do you have any links that can explain about Canon DSLR cameras, Please? In Layman's terms, though, Not Too Layman, if you know my meaning..... Thank you.
That's a great suggestion .. thanks!
Nothing matters, everything's important.
Is the correction better with the EDGE8/reducer combo? I find those elongated stars in 2 corners not acceptable after spending that sort of money on something that claims an entire corrected field.
I believe it could be improved further if I'd determined the exact back focal distance.
how much does it cost??
im new to all this stuff. just recently bought my own telescope. just wondering what is the black thing you have on top of your telescope at 5:33
I think you mean the dew shield? It's cheap and even if dew isn't a problem I'd highly recommend it as it also blocks out light.
Hi Dylan
I was wondering on what would be your opinion on going for a 9.25sct or 8inch rc?
I am looking for a all rounder scope.
if not these two what would you recommend?
The hyperstar option you mentioned is fun.. I definitely prefers SCTs for their planet work.
@@DylanODonnell hmm
what about deep sky
@@veeretsy7528 both sound fine for DSOs .. SCTs are slower but work fine especially with long exposures, good tracking and a reducer
@@DylanODonnell Thanks for the advice man
So I’m late for this but Dylan… can I use the reducer with a hyper star?
The hyperstar IS the reducer :) so, no.
@@DylanODonnell thank you so much for the clarification! im working on my credit score so i can finally get my Celestron 9.25". I wanted to get the 8" but i hear the optics are MUCH better on the 9.25" and i was going all in with hyperstar and the .7 reducer. Kinda hoping they work together but alas.. Also one more question. i want to start with astrophotography once I upgrade to this telescope . Can you reccommend a good planetary camera? i want to get UP CLOSE to the planets as much as possible
Why is the black white
Sick video for bintel!
idk if coincidence or what but video time shoudve been 1 second less. coz after that, the total video time and the size of his mirror wouldve matched. 9.25. Like if you found that out with me.
Hey Dylan.. i Currently have a 5" Orion SpaceProbe 130 ST EQ an was debating on dropping the Huge Amount of Cash to get A Celestron 9.25 Edge HD setup. Cld you tell me about the kinda difference of images i will see.? Or the Pros an Cons.? All Advice wld be Appreciated.
Celestron 9.25" EHD can be used at F10 (native), f7 (reducer) or f2 (hyperstar) which I think makes it a worthwhile investment. That's 3 scopes for the price of one! Good all rounder.. planets, deep space.. whatever really.
@@DylanODonnell will there be a big Noticable difference in what i can see as far as planets..? I know the other factors such as seeing conditions and stuff. But just in General will there be a Big diff..?
I can image and view the moon well. But Planets in my 5 inch is not Great.. An wld you Prefer 2 inch eye peices..?
Yeh huge difference.. SCTs are great for planets :) Bigger the better. I don't use eyepieces (see my video about eyepieces ;)
@@DylanODonnell is it Labled Eyepieces..?? Cldnt find..??
Bruce Nunn th-cam.com/video/U9QYUmANcmE/w-d-xo.html
What do you recomend for a new person
Check out my video about choosing a telescope :)
Where uranus and neptune Through the telescope
Celestron C11-A I hope it is almost as good as your 9.25"
I'd love that beast.
Good job. Turn the music volume down please.
Mick Hyde thanks! And no :)
That's a pity. Your content is excellent, and your delivery is laid-back, pleasant and quiet. Your "packaging", both video and music, is disproportionately loud and in your face. So now I only occasionally come back to your videos and when I do I usually give it the thumbs down.
Thanks for coming back, if only occasionally!
lol it's free content
bye, smell ya later
💚👍👍👍
I wonder how much it cost NASA to launch that thing to the ISS. I heard it's like $10,000/pound or something crazy like that to get something into LEO
Your wife plays a lovely violin.
Thank you! I let her know. She appreciates it.
Hey Dylan, I love your videos - about to get this reducer myself! I think your editing is great (I used to edit for Dutch TV several decades ago) and the videos are entertaining, filled with helpful info and quite funny as well. I now live in Santa Monica, CA - a great step up from Amsterdam, Holland when it comes to clear skies! Best, Martin astro.martincohenphotography.com/
Thanks man! I’m only editing in iMovie but I’m learning that timing and pace is more important than whatever tool I’m using .. gets the job done !
Thats the thing I dont like the hd series as the reducer is an outrageous price and heavy. I like my 9.25. Mind you the HD series is more for astrophotography
C8 original new have fastar
Does this reducer work with the 9.25 Hyperstar?
The hyperstar is a reducer at the front, this is a reducer at the back, so no. The hyperstar bypasses the back image train entirely.
You probably said it jokingly but you're definitely not "just" a youtuber mate ;) !
Cheers man :)
Why not just use hyperstar instead of Rasa?
Hyperstar 8 has F 1.9 / Focal Length 390mm / Image circle 28mm
RASA 8 has F 2.0 / Focal Length 400mm / Image circle 22mm
I have.. I’m a hyperstar fan too :)
@@DylanODonnell right on, I'm actually planning on getting the c6 hyperstar, since its relatively cheap and 300mm focal length supporting a 28mm sensor at f1.9... insane.
music volume down plz
deepak kumar mahato everytime someone asks I’m going to make it louder :)
Hmmmm....but are you sure those are asteroids....and not the Guardians of the Galaxy in a space battle?!?!? 🤔😜
Can’t be sure :)
Love your stuff, Dylan!! Did you even use the Lepus 0.62x reducer after buying the 0.7 Celestron reducer? I have the same set-up but I didn't have a strong enough mount for it. Recently I got a used EM-200 Temma 2, which should hold it nicely and I can't wait to start imaging with it. I use a full frame modified Nikon D610, you think the vignetting will be acceptable? Take care! Best, Martin
astro.martincohenphotography.com/
That’s not an astroid, that’s a UFO.
well, I'm going to heaven :P after my death :P to the stars and beyond :)
Damn... I hate your ending catch line "Remember...everything is meaningless and we are all gonna die! " :(
But it’s so uplifting !
Well he's technically right lol
The promotional video: There is too much rotation, I got dizzy when i watched it... sorry. But otherwise good...
I'm sure the video content was very good but the loud music is very off-putting.