Popular Post +Graham Posted September 4, 2020 Popular Post Share Posted September 4, 2020 I wanted to do a comparison between my 10 inch Meade and the 102mm F15 refractor on Mars. After trying with the 2X Barlow I decided to push things to the limit and probably beyond by sticking in the 5X Barlow. Imaging at F75 was interesting to say the least but it was the only way I could get Mars up to a decent size on the camera. Focusing was done manually by going back and forth out to the obs giving it a tweak then back inside to check so is a bit on the soft side. 3000 frames from a 5000 frame vid taken with the ZWO 120 MC stacked in Registax and tweaked in PS 6. The verdict. Very impressed with the lack of CA in the refractor. Doesn't quite stack up to the image quality of the Meade but this is probably down to how far I was pushing things. All in all an interesting experiment. +Bino-viewer, +RonC, +Ibbo and 4 others 7 Link to comment Share on other sites More sharing options...
Bottletopburly Posted September 4, 2020 Share Posted September 4, 2020 Very nice Graham , I really must get my mak out with the filter wheel soon on mars 👍 +Graham 1 Link to comment Share on other sites More sharing options...
+Graham Posted September 4, 2020 Author Share Posted September 4, 2020 3 hours ago, Bottletopburly said: Very nice Graham , I really must get my mak out with the filter wheel soon on mars 👍 Thanks David. Give it another week and Mars will be the brightest thing in the night sky apart from Venus. Link to comment Share on other sites More sharing options...
philjay Posted September 4, 2020 Share Posted September 4, 2020 Thats good Graham. You cant beat apeture when it comes to planetary imaging I found when I did something similar some years ago with a c11 and a 102. Pushing the mag to get a decent image scale drained the image in the f15. But for visual give me a 102 f15 every time. With f15 and vixen optics CA will be minimal probably a lot less ca in that than some of the apo,s out there. +Graham 1 Link to comment Share on other sites More sharing options...
+Graham Posted September 4, 2020 Author Share Posted September 4, 2020 I must admit Phil I was very impressed with the optics lack of ca. You never know I might even pop in an EP at some point when I am not fighting the incoming clouds Link to comment Share on other sites More sharing options...
philjay Posted September 4, 2020 Share Posted September 4, 2020 (edited) Woah, steady on there Graham 🙂 Yep, spend a good hour on Mars visually, if you have planetary filters you will be surprised at just what detail you can see. Mars is difficult to observe for a lot of folks but perservere and it can reveal loads. Edited September 4, 2020 by philjay +Ibbo and +Graham 1 1 Link to comment Share on other sites More sharing options...
+Ibbo Posted September 4, 2020 Share Posted September 4, 2020 2 hours ago, Graham said: I must admit Phil I was very impressed with the optics lack of ca. You never know I might even pop in an EP at some point when I am not fighting the incoming clouds Thought you only had the one centreing eyepiece 🤣 philjay and +Graham 2 Link to comment Share on other sites More sharing options...
+Graham Posted September 4, 2020 Author Share Posted September 4, 2020 (edited) 23 minutes ago, Ibbo said: Thought you only had the one centreing eyepiece 🤣 I did get an EP with the Mac when I bought it. Edited September 4, 2020 by Graham philjay and +Ibbo 2 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now