Michael A. Phillips' Astro Blog: June 2020

From the Crescent Nebula to the Sadr Region

I have had this camera for over 5 years and have yet to really discover it's full potential. I have been focusing more on how to squeeze the most out of it. I decied to lower the ISO from 1600 to 400, add some solid guiding via the C8 and QHY guidecam as well as ad bias calibration. I'm quite pleased with how the end result came out! It is minimally processed after all new darks, flats and new bias frames added to the stacking in DSS.

Solved annotation: http://nova.astrometry.net/user_images/3747039#annotated

Included in this region are the following:

SAC 20h18m50.13s +40°47'40.1" OC Cr 419 m: 5.40 sbr: Dim: 4.5 x 4.5 ' pa: 90 class:IV 2 p desc:13''-pB;pL;nRi;sC; 16* mags 11..13 at 100X;Compact but not rich;N of Struve 2666;14 * to 13 mag Const:CYG

SAC 20h24m39.81s +38°35'48.5" OC M 29 m: 6.60 Name:NGC 6913 sbr:11.00 Dim: 7.0 x 7.0 ' pa: 90 class:III 3 p n desc:Cl;P;lC;st L&S;About 20 stars mags 8... Const:CYG

SAC 20h17m16.00s +37°41'38.4" OC IC 4996 m: 7.30 Name:Cr 418 sbr: Dim: 6.0 x 6.0 ' pa: 90 class:I 3 p n desc:Cl;st 8...13; Const:CYG

SAC 20h23m56.37s +40°50'47.2" OC NGC 6910 m: 7.40 Name:OCL 181 sbr: Dim: 8.0 x 8.0 ' pa: 90 class:I 2 p n desc:Cl;pB;pS;P;pC;*20.12;H VIII 56;In Gamma Cyg nebula and Cyg OB9 Const:CYG

SAC 20h04m34.97s +44°13'19.2" OC NGC 6866 m: 7.60 Name:OCL 183 sbr: Dim: 7.0 x 7.0 ' pa: 90 class:II 2 m desc:Cl;L;vRi;cC;H VII 59;50* mags 10... Const:CYG

SAC 20h21m09.54s +38°45'43.7" OC Berk 86 m: 7.90 sbr: Dim: 8.0 x 8.0 ' pa: 90 class:I 3 p n desc:13''-pF;pS;nRi;nC 19* mags 10..13 at 135X; Const:CYG

SAC 20h12m04.83s +35°54'31.3" OC NGC 6883 m: 8.00 Name:OCL 148 sbr: Dim: 15.0 x 15.0 ' pa: 90 class:I 3 p n desc:Cl;pRi;** inv; r Gamma CYG Const:CYG

SAC 20h12m51.36s +38°24'32.0" Nb NGC 6888 m:10.00 Name:LBN 203 sbr: Dim: 20.0 x 10.0 ' pa: 90 class:E desc:F;vL;vmE;** att;H IV 72;Crescent Neb;Wolf-Rayet * invl Const:CYG

SAC 20h24m01.79s +41°45'47.2" OC Cr 421 m:10.10 sbr: Dim: 6.0 x 6.0 ' pa: 90 class:III 1 p n desc:13''-pF;pS;nRi;lC; 22* at 135X; Const:CYG

SAC 20h25m32.86s +40°13'49.5" Drk LDN 889 m:11.00 sbr:79.90 Dim: 90.0 x 20.0 ' pa: 90 class:4 Ir desc:;Wide lane in IC 1318 following Gamma Cyg Const:CYG

SAC 20h27m24.59s +43°48'51.5" Drk B 346 m:11.00 Name:LDN 906 sbr:79.90 Dim: 10.0 x 4.0 ' pa: 90 class:6 K desc:;In patchy area 2.8 deg preced and 1.5 deg south of Deneb Const:CYG

SAC 20h14m14.21s +40°19'33.7" Drk B 343 m:11.00 Name:LDN 880 sbr:79.90 Dim: 10.0 x 5.0 ' pa: 90 class:5 Ir G desc:;1.7 deg preceeding Gamma Cyg Const:CYG

SAC 20h29m09.20s +39°58'54.5" Drk B 347 m:11.00 Name:LDN 889 sbr:79.90 Dim: 10.0 x 1.0 ' pa: 90 class:5 Ir desc:;Narrow streak 1.2 deg foll and 20' south of Gamma Cyg Const:CYG

SAC 20h11m01.42s +41°16'28.9" C+N IC 1311 m:13.10 Name:OCL 173 sbr: Dim: 5.0 x 5.0 ' pa: 90 class:II 3 r n desc:30 pF * in eF neby;small cluster;Neb Descr=60'x20' emission neb in sev parts near Gamma CYG Const:CYG

SAC 20h26m45.02s +40°03'51.2" Nb IC 1318 m:14.90 Name:Sh2-108 sbr: Dim: 45.0 x 20.0 ' pa: 90 class:E desc:Gamma Cygni Neb;L patches of F nebulosity;Portions of neby surround Gamma Cyg;elong generally E-W Const:CYG

Full steps:

Guided in QHY at f/10 on 8" SCT on CGE mount with PHD2

Imaged piggy back on 200mm f/4 Canon lens.

Camera is stock Canon 60Da with LP filter.

Shot 26 x 5min subs with EOS Utility

Stacked and calibrated in DeepSkyStacker (DSS)

Processed in Photoshop:

Levels and Curves

Topaz Noise reduction

Saturation adjustment

Slight sharpening with Google NIX

Assembled menu'ing and text overlays in GIMP