2023a3 20241118 dbartlett

    Heavily populated area of the Milky Way in the constellation Serpens Cauda. 
    I don't have much faith in the SPCC color calibration. 
    Mixed sky conditions with partly cloudy skies. 
    I wasn't going to image, but at the last minute thought "Why not"? 
    The brightest blue star left of the field is an interesting dual spectral class A double star named Alya.  These two stars , magnitude 4.62 and 4.98 are separated by 22".  Look close. 

 
 
 
Full resolution link:
https://astrob.in/64vtg7/C/
 
 
 
Observational Notes:
scope: C14  fl729mm F/2
Camera: asi6200mcP
image: 68x30sec
Seeing: 3/5
Transparency: 7/10 Scattered Clouds
Observer: DEBartlett
Place: JuneLake California USA (Altitude +2357m)
 
Image Info (all ):
Down sampled 2x2 (CMOS = BIN 2x2)
(All images processed solely using PixInsight)
Projection ............... Stereographic
Projection origin ........ [2280.330710 1377.757405] px -> [RA: 18 51 25.269  Dec:  +4 22 45.90]
Resolution ............... 2.123 arcsec/px
Rotation ................. -0.926 deg
Reference system ......... ICRS
Observation start time ... 2024-11-18 02:05:59 UTC
Geodetic coordinates ..... 119 04 46 W  37 46 30 N  2357 m
Focal distance ........... 730.83 mm
Pixel size ............... 7.52 um
Field of view ............ 2d 41' 23.6" x 1d 37' 30.1"
Image center ............. RA: 18 51 25.269  Dec:  +4 22 45.90  ex: -0.016064 px  ey: -0.527849 px
Image bounds:
   top-left .............. RA: 18 56 44.931  Dec:  +5 12 28.24  ex: -1.201674 px  ey: -1.580652 px
   top-right ............. RA: 18 45 59.151  Dec:  +5 09 53.11  ex: +0.102434 px  ey: -1.158098 px
   bottom-left ........... RA: 18 56 50.556  Dec:  +3 35 20.90  ex: -1.545236 px  ey: +0.126463 px
   bottom-right .......... RA: 18 46 05.751  Dec:  +3 32 45.29  ex: +0.050548 px  ey: -0.374423 px