I paused and had my own coffee sip; why would I take that away from you? great video. I'm new(er) to the sport of astroviewing and coma has been a problem, hence, found this video and it is really good. Thanks
Excellent videos, illustrations and explanations. Thank you. This is a blessing for all amateur sky-gazers.. Also, a small correction: angle is spelt incorrectly as angel(confused the hell out of me for a few seconds :-) )
Thanks for clearing this up about this phenomena I have always wondered why the one mirror element was never seen in a mirror lens for photography but you always had that donut shaped bokeh effect in certain situations.
Responding to your question regarding focal length and f stop on the telephoto lens for my camera I was looking at a New FD Canon 500mm f/4.5 L with the Fluorite and UD glass and buying the Sky-Watcher EQM-35 tracker. I will eventual upgrade to a mirror telescope that I could use with this tracker. The Sky-Watcher Star Adventurer Pro Pack would be great for wide field photography but I want to do deep space photography also and as the saying goes buy nice not twice. I two have mirrorless cameras a Canon RP and R but I am also looking at the Canon M6 MkII with the crop sensor which would give me 800mm equivalent in a field of view. FYI I use IRIX wide angle lenses 11mm f/4 and a 15mm f/2.4 with good results and they are reasonable priced.
The eqm 35 pro holds something like 10kg and therefore should do the job with a dslr and a lens. Keep in mind, that this is no transportable "star tracker". It's a small sized but full blown telescope mount. So its not easy to carry around and assemble in seconds. I wouldn't place a reflection scope ontop. It't too lightweight and even a smal Newtonian with DSLR and guidescope and guidecam and filter, cables... it adds up and you are up to 10kg easy and quick. EQ3 Pro and mounts in the same league are for smal refractors. And those are great! They offer you a wide part of the sky - many DSOs are MASSIVE in the sky and cant be captured with the smaller FOV of most reflectors. Greetings Chris
@@catchingphotons Hello again Chris the egm 35 weighs in at close to 40Lbs and as you stated it would be cumbersome to haul around and it would be great for a DSR set up.To use a bigger telescope I would have to go the next step up at least with a HEQ 5 so I may just get the Sky-Watcher Star Adventure and use with my11/15/28/35/85/105/150/200/ mm lenses and get he experienced and then jump up to a real telescope and equatorial mount. My cameras are light weight 1st generation full frame mirrorless Canons the R and RP and this would be an easier setup to haul around for now. I would still like to get something in the 300-500mm range to round out the top though. PS: As you can see I like my primes! Thanks again Tom
Hey! #Trevor from #Astrobackyard did a video just about a simple and "cheap" (relatively speaking) setup for getting started in DSO photography. He uses an old Canon and modded it himself, then a skywatcher Startracker,a dedicated filter and a cool F2 lens. Check it out: th-cam.com/video/4a8pRirTe_8/w-d-xo.html The ability to gather 60' subs enables you to dive deep in. The most important factor here though is the modification of the Cam. Most of the "reddish" fog in the nebula is HA and (nearly) not visible without modification. Greetings Chris
Hey Jadeja, the question is: for what purpose? With 127mm aperture and 1000mm focal length you will be able to observe the planets, rings of Saturn, moons of Jupiter and craters of the moon. Using a smartphone adapter for the eyepiece you can even take cool images. With that aperture you will be able to see some faint ghosts of brighter deep sky objects, but don't expect much. For deep sky Astrophotography the Telescope is presumably not fitted to reach focus on the camera sensor and besides the mount will carry the scope for entry level visual observation but not for imaging (not sturdy enough and not motorized). All in all: a solid visual scope for entry level beginner observations of planets and moon. Clear skies!!
Old version. Watch: th-cam.com/video/Qld4yy_B28g/w-d-xo.html for enhanced audio and a coffee free version!
I paused and had my own coffee sip; why would I take that away from you? great video. I'm new(er) to the sport of astroviewing and coma has been a problem, hence, found this video and it is really good. Thanks
Absolutely the best explanation I have ever read or listened to .Thanks
Thank you Ranganathan for your encouraging comment!! I'll keep it going 😉 cheers and clear skies!
The visuals were super helpful for understanding coma! Amazing video!
Thanks a lot for your comment!!
Wow, I've seen a lot of videos about this topic in general, but this is the best explanation I came across so far. Thanks for sharing your insights!
Thanks a lot Alejandro! I enjoy creating this tutorial. If it's of any help: all the better!!
Clear skies!
Chris
A lot of good explanation in your video. Answered a few questions I've always had. Thanks. Good work
Thanks Wayne!
Excellent videos, illustrations and explanations. Thank you. This is a blessing for all amateur sky-gazers.. Also, a small correction: angle is spelt incorrectly as angel(confused the hell out of me for a few seconds :-) )
Thank you very much for your encouraging words! Haha :-) never spotted that specific typo, thanks. Clear skies!
Thanks for clearing this up about this phenomena I have always wondered why the one mirror element was never seen in a mirror lens for photography but you always had that donut shaped bokeh effect in certain situations.
Glad the video was able to help!
We are 200+ now and you were one of the first! Clear skies dude!
What an excellent explanation, thanks!
You are very welcome! :-) Glad you liked it! Clear skies! -Chris
fantastic video. great explanation, thank you!
Thanks Lance! I really like this vid, too. It was quite a fun to play around with the simulations, I learned a lot myself ;-) Greetings - Chris
I would refer to feynman for the explanation of why you can remove a tiny piece without perceptible loss of quality
I thought I'd keep it easy :-)
Responding to your question regarding focal length and f stop on the telephoto lens for my camera I was looking at a New FD Canon 500mm f/4.5 L with the Fluorite and UD glass and buying the Sky-Watcher EQM-35 tracker. I will eventual upgrade to a mirror telescope that I could use with this tracker. The Sky-Watcher Star Adventurer Pro Pack would be great for wide field photography but I want to do deep space photography also and as the saying goes buy nice not twice. I two have mirrorless cameras a Canon RP and R but I am also looking at the Canon M6 MkII with the crop sensor which would give me 800mm equivalent in a field of view. FYI I use IRIX wide angle lenses 11mm f/4 and a 15mm f/2.4 with good results and they are reasonable priced.
The eqm 35 pro holds something like 10kg and therefore should do the job with a dslr and a lens. Keep in mind, that this is no transportable "star tracker". It's a small sized but full blown telescope mount. So its not easy to carry around and assemble in seconds.
I wouldn't place a reflection scope ontop. It't too lightweight and even a smal Newtonian with DSLR and guidescope and guidecam and filter, cables... it adds up and you are up to 10kg easy and quick. EQ3 Pro and mounts in the same league are for smal refractors. And those are great! They offer you a wide part of the sky - many DSOs are MASSIVE in the sky and cant be captured with the smaller FOV of most reflectors.
Greetings
Chris
@@catchingphotons Hello again Chris the egm 35 weighs in at close to 40Lbs and as you stated it would be cumbersome to haul around and it would be great for a DSR set up.To use a bigger telescope I would have to go the next step up at least with a HEQ 5 so I may just get the Sky-Watcher Star Adventure and use with my11/15/28/35/85/105/150/200/ mm lenses and get he experienced and then jump up to a real telescope and equatorial mount. My cameras are light weight 1st generation full frame mirrorless Canons the R and RP and this would be an easier setup to haul around for now. I would still like to get something in the 300-500mm range to round out the top though.
PS: As you can see I like my primes!
Thanks again Tom
Hey!
#Trevor from #Astrobackyard did a video just about a simple and "cheap" (relatively speaking) setup for getting started in DSO photography. He uses an old Canon and modded it himself, then a skywatcher Startracker,a dedicated filter and a cool F2 lens.
Check it out:
th-cam.com/video/4a8pRirTe_8/w-d-xo.html
The ability to gather 60' subs enables you to dive deep in. The most important factor here though is the modification of the Cam. Most of the "reddish" fog in the nebula is HA and (nearly) not visible without modification.
Greetings
Chris
Brother i want to khow how to use the sims of reflaction telescope after downloading i cant run them from this video
Download the program "GeoGebra":
www.geogebra.org/download?lang=en
Open the files and play around :-)
Are powerseeker 127eq telescope is good?
Hey Jadeja,
the question is: for what purpose? With 127mm aperture and 1000mm focal length you will be able to observe the planets, rings of Saturn, moons of Jupiter and craters of the moon. Using a smartphone adapter for the eyepiece you can even take cool images.
With that aperture you will be able to see some faint ghosts of brighter deep sky objects, but don't expect much.
For deep sky Astrophotography the Telescope is presumably not fitted to reach focus on the camera sensor and besides the mount will carry the scope for entry level visual observation but not for imaging (not sturdy enough and not motorized).
All in all: a solid visual scope for entry level beginner observations of planets and moon.
Clear skies!!
#catchingphotons make video to use geogebra with after downloding My sims of a reflection telescope and how to use them. thanks
That's not really the focus of this tutorial series :-)
Try this one here:
th-cam.com/video/1cBXWi66-tY/w-d-xo.html
Greetings!
Chris