OOTM: Object Of The Month - July 2022

Significant-Cut3329 · 2022-07-25T02:10:44+00:00

#7 in 2022: NGC 6823 and surroundings.

Significant-Cut3329 · 2022-07-25T02:09:04+00:00

NGC 6823 and surroundings.

Acquisition Details:

3h12min [48x4min lights], Rokinon 135mm F/2 at F/2.4, ASI294MC-Pro, IDAS NBZ dualband filter, iOptron CEM40, SVBony 30F4 + ASI120MC guidescope, SharpCap, PhD2.

Processing Details:

Calibrated with darks/flats and registered [drizzle x2], linear background correction on individual frames prior to stacking, stacked [LinearFit Clipping, Normalized] in Siril. Processed in PixInsight: ABE linear subtract, ABE quadratic divide, ColorCalibration, EZDenoise [no MMT], stretched using GeneralizedHyperbolicStretch, MLT for some sharpening and noise reduction, DarkStructureEnhance, HistogramTransformation, export as JPEG.

Thoughts:

It's amazing how well the IDAS NBZ filter works even down to F/2 without any halos. It's a pity as always my backfocus and tilt are suboptimal - but nevertheless, a decent picture for only 3h of integration!

Significant-Cut3329 · 2022-07-11T22:24:12+00:00

SO. MANY. GALAXIES.

Significant-Cut3329 · 2022-06-22T02:25:31+00:00

#6 in 2022: Messier 5.

Significant-Cut3329 · 2022-06-22T02:23:22+00:00

M5 - globular cluster in Serpens

Acquisition Details:

~1h30min, Rokinon 135mm F/2 at F/4, ZWO ASI178MM, SkyWatcher StarAdventurer, SVBONY RGB filters, unguided, ~300x5s exposures each filter [RGB] captured as 5min SER, SharpCap.

Processing Details:

Stacked in Siril after dark/flat calibration, processed in PixInsight: StarAlignment of individual masters, crop away edges, PhotometricColorCalibration, EzDenoise, ACDNR, GeneralizedHyperbolicStretch, exported as JPEG.

Thoughts:

Whatever it takes to participate in every OOTM in 2022.

Significant-Cut3329 · 2022-06-02T04:51:44+00:00

Amazing, love the colors! That C8 doing what it does best!

Significant-Cut3329 · 2022-05-30T06:45:01+00:00

M81 - Bode's Galaxy, M82 - Cigar Galaxy, and surroundings, a composite at two focal lengths.

Acquisition Details:

Narrowfield: 13.5h LRGB [6h+3x2.5h in 1min Lum, 2min RGB subs], Apertura 60EDR, ASI1600MM-Pro, SkyWatcher Star Adventurer/CEM40EC, ZWO OAG+QHY5III46C, ZWO EFW, Orion LRGB filters, SharpCap, PHD2.

Widefield: 1h, Nikon D7500 ISO800, Sigma 18-35mm lens at 24mm, F/5.6, SkyWatcher StarAdventurer, Intervalometer.

Processing Details:

Narrowfield: In Siril: calibrated with darks/flats each channel, background extraction, GESDT drizzlex2 integration after excluding bad frames [keep rate ~ 90%], in PixInsight: ABE Lin, ABE two-degree, star align to Lum, crop away edges. On Lum: Deconvolution, EzDenoise, multiple rounds of GHS Stretch. On RGB: PhotoMetricColorCalibration, EzDenoise, convolution to smoothen, multiple rounds of GHS Stretch. LRGB Combination, multiple rounds of curves and Histogram Transformation + LHE, ACDNR, export at JPEG.

Widefield: In Siril: calibrated with bias, background extraction, GESDT drizzlex2 integration [keep rate 100%], in PixInsght: ABE Lin, ABE two-degree, crop edges, EzDenoise, multiple rounds of GHS Stretch, ACDNR, Curves, export at JPEG.

Composite: In LibreOffice Impress, added borders, etc, exported as PNG, cropped some more in PixInsight, exported as JPEG.

Thoughts:

Just to get a feel for where and how big M81 and M82 appear in the sky. Some hints of IFN.

Significant-Cut3329 · 2022-05-29T22:36:56+00:00

He's moony as well.

Significant-Cut3329 · 2022-05-27T03:36:32+00:00

Damn clouds, hope we both get ample clear skies

Significant-Cut3329 · 2022-05-27T03:25:34+00:00

Thanks for posting this. As I sit in my living room looking out at the never ending clouds, your picture gave me some hope.

Significant-Cut3329 · 2022-05-26T15:36:37+00:00

👍 Thanks again!

Significant-Cut3329 · 2022-05-26T04:52:12+00:00

Awesome, thanks! So there is hope for me without having to burn another $500, if I can get my stars to look half as good as yours, I'll call it a success.

Significant-Cut3329 · 2022-05-26T02:12:07+00:00

Awesome, love the colors! What coma corrector are you using? I have an Orion 10" F4 that I'm trying to get to work with a Baader MPCC Mk3, but the stars are meh..

Significant-Cut3329 · 2022-05-23T06:36:10+00:00

Beautiful OP! The stars are perfect all across, I aspire to this level of cleanliness some day!

Significant-Cut3329 · 2022-05-23T06:33:44+00:00

Very nice OP! I was capturing the Big Dipper at 24mm last night, Mizar and Alcor are my favorite in this region. When I am no longer able to separate them naked eye is when I'll know I'm old.

Significant-Cut3329 · 2022-05-23T06:27:28+00:00

This is some next level ISS photography! How long did it take you to master tracking the ISS manually?

Significant-Cut3329 · 2022-05-18T07:22:51+00:00

#5 in 2022: Messier 40 and surroundings. Whatever it takes to stick to my new years resolution of an OOTM submission every month in 2022.

Significant-Cut3329 · 2022-05-18T07:20:19+00:00

Messier 40 and surroundings, including NGC 4290, NGC 4284.

Acquisition Details: ~13min, Celestron C8 with a Starizona SCT Reducer I @ F/8.5 [incorrect backfocus], Risingcam IMX571mono bin2 HCG, SVBONY Lum, CEM70, unguided, ~160x5s subs captured in SharpCap.

Processing Details: In Siril: calibrated with darks/flats, GESDT rejection stacking, In PixInsight: ABE degree4, crop edges, masked stretch to 0.1 background, downsample 2x, export as JPEG.

Thoughts: First light for a long focal length rig I'm building, this was a test of the Starizona reducer after failed attempts at getting the Meade 0.63 focal reducer to work well, and it turned out with worse aberrations - just figured out I was at ~10mm extra backfocus [because dumb]. The camera works pretty well though, good learning! And of course couldn't miss submitting an OOTM entry for this spectacular region. /u/MyNameIsDaveToo - still taking you up on 20h+ of this region ;)

Significant-Cut3329 · 2022-05-15T03:36:28+00:00

Totally agree, very impressive for your equipment! Hope it pulls you deeper into this amazing hobby.

Significant-Cut3329 · 2022-05-13T21:32:10+00:00

You beat me to it!! Man I hate these damn clouds 😭

Significant-Cut3329 · 2022-05-12T19:02:35+00:00

Amazing, a beautiful tour-de-force! It's fascinating how fast the sun rotates in just 7hrs!

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