Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

Welcome to Stargazers Lounge

Register now to gain access to all of our features. Once registered and logged in, you will be able to contribute to this site by submitting your own content or replying to existing content. You'll be able to customise your profile, receive reputation points as a reward for submitting content, while also communicating with other members via your own private inbox, plus much more! This message will be removed once you have signed in.

  • Announcements

    SGL 2017 SP


M94- Galaxy

5 posts in this topic


M94 Galaxy taken over a couple of nights. 145mins, worth of 5 mins light frames. Using the ES 102mm APO refractor on a AVX mount

No darks, but with flats and bias calibration frames 

Used Canon 450d camera (um-mod) with CLS filter. Stacked with DSS and processed in PS 

Thanks for looking, feedback gratefully received :) 



4 people like this

Share this post

Link to post
Share on other sites

Looks good, Dean. But it's a small target, isn't it?

1 person likes this

Share this post

Link to post
Share on other sites

i was just chuffed that i was getting 5min subs with v. little trailing :) 

Share this post

Link to post
Share on other sites

Yes, guiding worked well. In the corners you have elongated stars. But the direction of the longer axis suggest a flat field issue. Do you have a flattener with your scope? The large camera sensor reveals any off axis optical blemishes of the scope. If you want perfect stars all the way to the corners, you'll need a field flattener, and get it at the correct distance between optics and sensor.

Personally, I think I would just crop my images somewhat. With a dslr sensor, there is usually room to spare.

Share this post

Link to post
Share on other sites

No flattner with the scope! I think cropping is the way at the moment. Eventually want to upgrade camera havent decided which way to go yet. OSC or another DSLR. Although admiring peoples images they tend to be mono camera's with filters. Because of LP in my areas to want to squander the the money with equipment i can use occasionally 

Also the other factor is  practicing all this processing in PS.




Share this post

Link to post
Share on other sites

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 account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.