Jump to content


Help/advice for EAA newbie…

Recommended Posts

4 hours ago, Toltec said:

Interesting thread as I'm planning on having a go at this myself this year.

Thanks Toltec, good luck with your EAA adventure!

Link to comment
Share on other sites

Hi Ian, 

12 hours ago, Big Ian 65 said:

is the need to refocus due to temp, just down to the expansion/contraction of the scope components, or something else?

As you say just down to expansion/contraction. Sometimes scopes will need to be re-focused if you point them at a very different part of the sky (things move slightly in some scopes). I only very rarely needed to re focus my C11/C9.25 during a session but makes sense to be aware that focus might change during a long session.



  • Like 2
Link to comment
Share on other sites

Hi all, another question… does it matter where you place the focus mask? Does it have to be placed directly in front of the corrector plate on my SCT, or can I just place it over the dew shield? My dew shield adds about 450mm in front of the corrector… obviously easier to use if I don’t have to remove the dew shield.

Link to comment
Share on other sites

  • 3 weeks later...

Hi all - here are a few EAA images from my second outing on Saturday night 9/10 July (unfortunately my learning has been delayed by a bout of Covid...) however I am slowly evolving my setup procedure to make things a little easier (limited by the equipment I have) I tried to use my Antares F6.3 reducer, but couldn't achieve focus with that, so these images are at the native focal ratio of my scope (F/10) - I think I need an extension tube to be able to use the reducer. (Camera has 18mm focal path, the sony T adapter adds about 36mm + the focal path of my 2" diagonal)

FYI The Y focal mask works great!

Thanks for the support from you guys, I think I am progressing slowly, and I am pleased with the results so far.

Cat Eye - 2022-07-10 - Stack_11frames_110s_WithDisplayStretch processed.png

Eagle Nebula - 2022-07-10 - Stack_30frames_300s_WithDisplayStretch - processed.png

Hercules Cluster - 2022-07-10 - Stack_17frames_170s_WithDisplayStretch - processed.png

M3 - 2022-07-09 - Stack_32frames_238s_WithDisplayStretch - processed.png

M29 - 2022-07-10 - Stack_19frames_190s_WithDisplayStretch - processed.png

M81 - 2022-07-10 - Stack_46frames_442s_WithDisplayStretch - processed.png

M92 - 2022-07-10 - Stack_23frames_230s_WithDisplayStretch - processed.png

M94 - 2022-07-09 - Stack_26frames_260s_WithDisplayStretch - processed.png

Sunflower - 2022-07-10 - Stack_34frames_408s_WithDisplayStretch - processed.png

Whirlpool - 2022-07-10 - Stack_29frames_290s_WithDisplayStretch - processed.png

Wild Duck Cluster - 2022-07-10 - Stack_4frames_40s_WithDisplayStretch - processed.png

  • Like 3
Link to comment
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

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.