Lagoon in Ha OAG trial

[DJScotty]

Hi all.
A fellow IIS member was kind enough to part with an unused OAG.
Installed it last night and the end results are for you viewing.
Only 2 x 30 minute subs, full suite of calibration applied.
Stars are as good as I am going to get with this mount, considering it is 3kg over capacity...

Any feedback welcomed.

Full version here
http://www.astrobin.com/210644/

Thanks for looking

[strongmanmike]

Very nice Scott, OAG, only way to go :thumbsup:

The Lagoon looks like a fat Rhinoceros (running to the left) when framed like that :)

Is that a bad column in the middle of the image..?

Mike

[Slawomir]

OAG is a powerful ally...

Great result Scott! :thumbsup:

[DJScotty]

Thanks for that Mike. I wish I had discovered this device 12 months ago!
I believe that is a bad column in the middle. Not sure why this wasn't removed in calibration. Any suggestions?

[DJScotty]

Indeed it is powerful! :fight:

[Slawomir]

More subs if calibrating with Nebulosity? And there of course is a Cosmetic Correction tool in PixInsight... :P

[DJScotty]

Are you trying to convince me to join the pi cult! ? :D

[strongmanmike]

Is the same column in your darks..?

In Astroart there is an option to remove any columns like that in pre processing, just have to tell it the column number.

Mike

[Slawomir]

PI is a powerful ally... :lol:

[Placidus]

Overall a very nice deep image and stars are very sharp.

Might have lost guiding briefly, because every star has a little echo a few pixels to the left. A third sub, and you can use median combine to make the echo go away.

Other than that tiny glitch, the guiding looks rock solid.

[Slawomir]

That might be a result introducing OAG into optical train that changed the spacing from the coma corrector, but I did not want to mention that as not to spoil Scott's joy ... :scared3:

I do not think that he will be able to reduce the distance between the coma corrector and the CCD with the OAG and filter wheel in between the two:question:

Irrespective of this minor imperfection (every system has some!), IMO we can now expect some really great images from Scott.

[RickS]

Looks like progress, Scott!

Watch those PI cult guys. One minute you're normal, the next you're spouting gibberish like "AtrousWaveletTransformation and GradientHDRComposition" :shrug:

Cheers,
Rick.

[DJScotty]

Thanks very much Mike and Trish. The mount does tend to jump around a little bit. Probably severe pe or something. One day I will get around to stripping the whole mount down and tune it. :thumbsup:

[DJScotty]

Thanks Rick. Very good progress. I owe slawomir a big bottle of vodka! :thumbsup:

[Atmos]

Apart from that bad column it is a pretty clean looking image, lots of detail in there :)

[DJT]

Cool. OAG rocks. It's a great image.

[DJScotty]

Thanks Colin. I have added some more data to the image. I think the bad column is gone. Now working on oxygen :thumbsup:

[DJScotty]

Thanks David. I am now an oag convert! :thumbsup:

[Slawomir]

I am looking forward to seeing your version of the Lagoon in colour Scott. Really happy that you have sorted out flexing - it surely has made astrophotography more enjoyable and also more rewarding :thumbsup:

Being on OAG convert, you are on your way to becoming a member of a certain cult... ;)

[DJScotty]

The lagoon will have to wait until next year now. Camera going back to UK again to have desiccant chamber replaced :mad2:
Hopefully this will not take 2 months again

[Slawomir]

Oh no!...

At least you have the 314L and a small guide camera to keep you busy in the meantime...

[Rex]

That's a solid result Scotty. I've been thinking of trying an OAG for my rig, but I am not sure if the QHY5 is sensitive enough to use one. Anyway will be watching your progress with added interest. B the way what guide camera do you use?

[DJScotty]

Yes thanks Slawomir. :thumbsup:

Rex thanks very much. My guide camera (but for a while it is now my imaging camera) is the Atik 314L. It is super sensitive. Never had a situation where I couldn't find a star.

Look out for two new images very very soon :D