MarkAR

Good Idea Olly. First one is drizzled.

Lovely image especially as you've picked up the disc formations of the tiddlers.

I think on the tripod base might be better. Mounted on the dovetail could cause balance and weight issues.

Hi all, been playing around with my data and Pixinsight and couldn't decide whether drizzling would be good or bad. So I processed both as closely as possible, just a slight variation at the end with Histo and Curves. The main thing to look for is star and galaxy shape and resolution and also background noise. My camera and scope give me 1.454 arctics per pixel. Should I drizzle ? I don't know but the Mrs says the drizzled one looks better. NGC3184_Driz_RGB3_ABE_Fin.tif NGC3184_LRGB.tif

WOW, that's a prom and a half.

You have my interest peaked, would it be for something like pen making?

I've been using Ekos which can calibrate flats on the fly, seems to work well. I also found out that if you have binned your lights then you have to match the binning of the flats, darks and bias.

Amazing detail you have achieved, well done.

Great images, the first one looks like a horses head and mane.

Superb image, definitely one of the very best M51's.

Ok, I thought the ASI1600 was a mono ccd, if it's CMOS then batch preprocessing is not ideal. Have a look at Chris Woodhouse vids on YouTube, goes through the process for CMOS.

Have a look at Chris Woodhouse on YT. There's one where he shows using Cosmetic Correction.

Yup, it's your sensors bayer matrix.

Did you take Bias frames ? they might help. It looks like your flats might have over corrected the vignetting or you're getting amp glow/ light seepage in the corners. Noise wise the galaxy looks fine, maybe just crop out the corners.

Looks much better. Another tip I found for SNCR is to invert the image then apply SNCR then invert back, get rid of magenta.

I use one of these. https://www.dewcontrol.com/Mains_Power_Supply_Unit_-_12V_10A/p3099125_19688635.aspx

Really nice and crisp.

Had a play around with the non drizzled masters. Dynamic Crop, Mure Denoise on the Grays, RGB Combine, Colour Cab, Photo CC, Inverted SCNR then SCNR non inverted, LRGB Combine, Hist Stretch and a tweak in Gimp to darken the background. ABE and DBE produced horrendous effects, so there's still a light gradient to contend with.

I would say you wouldn't need any filter at all.

Well done, colours look great. There is so much to learn in PI but the results can be awesome, I did a process on my un-drizzled NGC3184 data last night starting off with Mure Denoise on the separate channels in grayscale. OMG what an amazing script. I then tried to get rid of some background gradients after RGB Combo using ABE and DBE and the results were horrendous. Going to try the DBE before Mure to see what happens.

Looks really good, well done in windy conditions.

Thanks as well Sean, the calculator will come in very handy.

If you've tried all the different database servers and ticked Force Plate Solving then I'm not sure. Maybe go back to when you Colour Calibrated and try it directly after that. If you've already tried that then I'm not sure why it wont work.

Possibly.

Dust spots, flats should remove them.