No need to apologise this is a excellent tip not only for beginners but all who do astrophotography , I had mine since day one a huge help. Wishing you a happy new year and looking forward to seeing more TH-cam videos from you.
This is a really good idea AstroStace. Of course people need a way to get precision to get perfection with the machines they can buy now. Can I suggest that you show what you are seeing to the viewers? And then explain the digital from analog because you have the gift. I have those calipers and I use them all the time because I was trained on the old ones many moons ago and these digital wonders made in Southern Asia like everything only cost me a few bucks too. Success is all about accuracy and the distance to sensor at the end of the day from the focal point or plane has to be the end point. I think you add up all that you have in there and that's it. Focus and wait for the clouds to clear.
Glad to see you again! I hadn't thought about it, but yes, digital calipers are a basic tool for modern life! Not just optical spacings, but also diameters and many other things. Well done.
Happy New Year Stace. Thanks for that I have been working with tape measures/rulers for the past few years and had to resort to an adjustable spacer which I would move, image, check , move again until I got the spacing right on my SCT. I'll definitely invest in one of these :-)
Happy new year! Lol, guess who got one for Xmas, totally agree,best present. Saves poking my tongue out and going cross eyed trying to read a ruler. Here's to 2021, clear skies 👍
So basic, but so useful; thanks. I still haven't been brave enough for deep space imaging, but I'm slowly creeping in that direction so this will become really important (- in my case measuring from a coma corrector rather than a reducer/flattener since I have a Newtonian reflector).
Last year was most certainly not a _complete_ fail for you, only partial and for that I blame the guy who sold me that defective cloud-zapper. Jokes aside, a caliper is good to have. It helped me achieve proper back-focus which in turn eliminated the non-round stars near the edge of the field.
Sorry for the noob question here, but how do you figure out how far the sensor needs to be from the flattener or other items? Is it given on some kind of a spec sheet? How do I differentiate between accessories that are just "not compatible with my gear" from those that "just need a bit more space between them and the next bit"?
g`day stace great little video and happy new year. you should also add the thickness of your filters glass to the overall distance to your sensor to be even more accurate with your back focus i think slymen /astro bender guy did a video on the subject of filterglass thickness and calculating back focus cheers james D
Hehe see the description :) mine actually adds up to 56mm rather than 55 :) I didn’t want to mention it and confuse the issue, that one is mainly for another video . Thank you for mentioning it though! :)
@@AstroStace oopps sorry stace i didn't read the description i got a notification of a astrostace video and just jumped on it to watch sorry about that i can delete the comment if you like to save problems and mucking up a future video of yours.... its all good :) cheers james D
Yep, these are great, gives you an exact number so you aren't faffing about trying to count and move it accidentally and then have to start all over again 🙄🤭
No need to apologise this is a excellent tip not only for beginners but all who do astrophotography , I had mine since day one a huge help.
Wishing you a happy new year and looking forward to seeing more TH-cam videos from you.
Happy new year! Wishing everyone clear skies for 2021
Astrophotography is just plumbing! Back-focus spacing is one of the hardest things to master. Good tips!
Hey Stacey!
Nice video! I think I'll buy one right away :-) Thanks for the tip!
Clear skies! -Chris
Nice one Stacey, short and sweet. The Digital caliper is a superb bit of kit.
- Si -
This is a really good idea AstroStace. Of course people need a way to get precision to get perfection with the machines they can buy now. Can I suggest that you show what you are seeing to the viewers? And then explain the digital from analog because you have the gift. I have those calipers and I use them all the time because I was trained on the old ones many moons ago and these digital wonders made in Southern Asia like everything only cost me a few bucks too. Success is all about accuracy and the distance to sensor at the end of the day from the focal point or plane has to be the end point. I think you add up all that you have in there and that's it. Focus and wait for the clouds to clear.
Happy New Year Stace! Thanks for sharing this bit of info with us.
I bought one last year, and have found it very valuable! I haven't had a chance to use it to measure spacing yet. Thank you!
Happy New Year Looking forward to more videos this year.
Happy new year Stace
Glad to see you again! I hadn't thought about it, but yes, digital calipers are a basic tool for modern life! Not just optical spacings, but also diameters and many other things. Well done.
Here's a really sticky problem that my digital caliper helped me figure out: www.covingtoninnovations.com/michael/blog/2007/index.html#x200701
Thank you for this video. I have been in astrophotography for about 2 months now. Yes I am a NEWBIE. lol Take care and keep the videos coming.
Happy New Year Stacey & clear skies to you for 2021. Stay Safe & well. Marc
Astrostace is back \o/ Merry new year :-)
Just received one from amazon. Thanks Stace!🖖🔭🍕🍺🐶🐾🐾🐾🐾🐾🐾
Happy New Year Stace. Thanks for that I have been working with tape measures/rulers for the past few years and had to resort to an adjustable spacer which I would move, image, check , move again until I got the spacing right on my SCT. I'll definitely invest in one of these :-)
Welcome back and happy new year
Happy new year! Lol, guess who got one for Xmas, totally agree,best present. Saves poking my tongue out and going cross eyed trying to read a ruler. Here's to 2021, clear skies 👍
Brilliant video. Have been struggling with my adjustable field flattened to hit 10.6mm this will definitely help :). Thanks.
Glad to help!
So basic, but so useful; thanks. I still haven't been brave enough for deep space imaging, but I'm slowly creeping in that direction so this will become really important (- in my case measuring from a coma corrector rather than a reducer/flattener since I have a Newtonian reflector).
Last year was most certainly not a _complete_ fail for you, only partial and for that I blame the guy who sold me that defective cloud-zapper.
Jokes aside, a caliper is good to have. It helped me achieve proper back-focus which in turn eliminated the non-round stars near the edge of the field.
Sorry for the noob question here, but how do you figure out how far the sensor needs to be from the flattener or other items? Is it given on some kind of a spec sheet? How do I differentiate between accessories that are just "not compatible with my gear" from those that "just need a bit more space between them and the next bit"?
Happy New Year!
Here's to a productive 2021!
g`day stace great little video and happy new year. you should also add the thickness of your filters glass to the overall distance to your sensor to be even more accurate with your back focus i think slymen /astro bender guy did a video on the subject of filterglass thickness and calculating back focus
cheers
james D
Hehe see the description :) mine actually adds up to 56mm rather than 55 :) I didn’t want to mention it and confuse the issue, that one is mainly for another video . Thank you for mentioning it though! :)
@@AstroStace oopps sorry stace i didn't read the description i got a notification of a astrostace video and just jumped on it to watch sorry about that i can delete the comment if you like to save problems and mucking up a future video of yours.... its all good :)
cheers
james D
Happy New year Stace, I’ve got the callipers, but could really do with some of those shims, where did you get them from?
I got them from First light optics :) they’re made by baader
Yep, these are great, gives you an exact number so you aren't faffing about trying to count and move it accidentally and then have to start all over again 🙄🤭
The people who dislike this video prefer to use an imperial systems ruler, and convert to metric using an abacus.
There’s always a couple, who instantly dislike :) I’ve got myself some shadow trolls .
Happy new year Stace