Rho Area from SPSP 2017

[multiweb (Marc)]

Originally Posted by Octane

That's gorgeous, man. So, so smooth. All those exposures paid off.

Thanks for the tip, re: drizzling to get rid of the crunchy square stars. I suffer from the same issue at 3.5"/pixel.

H

Thanks H. Hope you're well and still looking up. Haven't heard from you in a while.

I found this terrific tut couple of years back on the PI forums to do bayer drizzle. I attached the ratios I use for my QHY8 for color balance (CCD Stack). Also here's the flow I use (see attached). Follow it step by step and it'll work.

I have a link here to the DLL you need to use with the image container.
CFA2RGB
That will work with the latest PI 1.8. Just unzip it in your PixInsight/bin directory.

Any question regarding debayering or integration settings just haul.

[multiweb (Marc)]

Originally Posted by marc4darkskies

Very subtle and beautiful Marc - nice job!

Thanks Marcus. Nice catching up with Gail and yourself at SPSP.

[Octane (Humayun)]

I'm well, mate. Capturing data each night.

That screenshot didn't make sense to me!

I have used drizzle in the past for when I used to bin 2x2 my RGB frames. I capture RGB in 1x1 nowadays.

If I drizzle everything x2, reckon it should fix the + shaped stars?

H

[multiweb (Marc)]

Originally Posted by Octane

I'm well, mate. Capturing data each night.

That screenshot didn't make sense to me!

I have used drizzle in the past for when I used to bin 2x2 my RGB frames. I capture RGB in 1x1 nowadays.

If I drizzle everything x2, reckon it should fix the + shaped stars?

H

ah... you use a mono with a filter wheel? Yeah, I use an OSC with a bayer matrix. So in your case you just use the standard drizzle integration once you have generated the drizzle files with the star alignment process. Lot simpler. To get the best result you need to dither your exposures during capture.

[Octane (Humayun)]

Yep, I dither between each exposure.

I'll go back and rework some data tonight.

H

[graham.hobart (Graham stevens)]

very cool!
can you tell me what oag you have?
i am building a similar system soon and will likely use one. with qhy 8 pro.

[multiweb (Marc)]

Originally Posted by graham.hobart

very cool!
can you tell me what oag you have?
i am building a similar system soon and will likely use one. with qhy 8 pro.

Thanks Graham. The OAG block is from the starlight xpress SXV-AO-LF. It's a QHY9 on the pic but the QHY8 setup is the same. Only difference is the 13mm spacer in the front of the QHY8 so the lodestar can come in focus.

[Atmos (Colin)]

Wonderful shots Marc
I've always wondered how to Bayer drizzle! Never been happy with the Batch Preprocessing attempt at it so just ended up doing it the traditional way; calibration, registration, integration.

[RobF (Rob)]

Very very nice work Marc!
Coming to Astrofest this year?

[multiweb (Marc)]

Originally Posted by Atmos

Wonderful shots Marc
I've always wondered how to Bayer drizzle! Never been happy with the Batch Preprocessing attempt at it so just ended up doing it the traditional way; calibration, registration, integration.

Thanks Colin. It works well but the more subs the better or you might get moire patterns.

Originally Posted by RobF

Very very nice work Marc!
Coming to Astrofest this year?

Thanks Rob. Sure am. Whole week

[Atmos (Colin)]

I've got several sets of 19x300s from Tuesday that I might try it with.

[alan meehan (Alan)]

Very nice indeed Marc good to catch up with you ,well have a beer in qld
AL

[Rod771 (Rod)]

Beautifully smooth, Marc! Great result!

[astronobob (Bob)]

Classic Target done very very well, Marc, loving them colours too, them orange/yellows are just awesome
Top Job !!

[Octane (Humayun)]

Marc,

Just reporting back; x2 drizzle integration has resolved my plus-shaped star issues.

I was wondering why I only ever noticed it on some images and not others -- it never appeared on images that were Drizzle'd.

Thanks!

H

[multiweb (Marc)]

Originally Posted by alan meehan

Very nice indeed Marc good to catch up with you ,well have a beer in qld
AL

Thanks Al. For sure, looking forward to it.

Originally Posted by Rod771

Beautifully smooth, Marc! Great result!

Thanks a lot Rod.

Originally Posted by astronobob

Classic Target done very very well, Marc, loving them colours too, them orange/yellows are just awesome
Top Job !!

Thanks Bob. Glad you like the colors.

Originally Posted by Octane

Marc,

Just reporting back; x2 drizzle integration has resolved my plus-shaped star issues.

I was wondering why I only ever noticed it on some images and not others -- it never appeared on images that were Drizzle'd.

Thanks!

H

Cool - good to hear it works.