Jump to content

sgl_imaging_challenge_2021_annual.thumb.jpg.3fc34f695a81b16210333189a3162ac7.jpg

"Data farming V1369 Cen + AA5 slit guiding


Recommended Posts

I'm finally pleased to say I managed to get the latest AstroArtV5 "slit guiding" set-up to work!!!
My problems were related to the EQMod settings!
I'd like to thank Paolo and Fabio for the support, help and assistance.

Reasonable night down here - bright moon but nova pretty easy to guide on with 1sec and the Lodestar. "data farming" at Hb, Na and Ha.
Link to post
Share on other sites
I'm finally pleased to say I managed to get the latest AstroArtV5 "slit guiding" set-up to work!!!

My problems were related to the EQMod settings!

I'd like to thank Paolo and Fabio for the support, help and assistance.

Reasonable night down here - bright moon but nova pretty easy to guide on with 1sec and the Lodestar. "data farming" at Hb, Na and Ha.

So the slit guiding is a reflective slit, the guide camera guides off the star using FHWM, but keeping the centre on the slit?

Link to post
Share on other sites

What problems were you having Ken?. I seemed to get the slit part working ok but the guiding was a bit hit and miss!. I do tend to find the guiding in AA5 a bit iffy sometimes it works great sometimes its all over the place even with the same object a night later? maybe my EQMod settings want a tweak?

Steve

Link to post
Share on other sites

Nick,

Yes. The slit plate is a chromed glass plate with an etched slit gap. The target star is focused onto the slit plate and positioned onto the slit gap. The reflected image is focused into a guide camera which "locks on" and holds the target accurately on the slit for the duration...

Steve,

That sounds like my previous experiences....

I set the guide rate in EQMod to 0.75 sidereal and used the AA5 guide "Automatic Calibration" to confirm the RA/Dec directions (relative to the slit height) and the guide speed (pixel/ sec) Ended up with 0.7 pixel/ sec in RA and 1.8 pixel/ sec in Dec.

Touch wood it worked 100% all night.

I was impressed!

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.

×
×
  • 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.