SH2-232
Sh2-232 (centre), Sh2-235 (bright area), SH-231 and the smaller SH2-233 to the left, are large faint regions of Ha-nebulosity in the constellation Auriga. But they aren’t the only objects in the image. The small (blue) oval structure just above centre of Sh2-232 is the planetary nebula, PN G173.5+03.2. The estimated distance to Sh2-235 is 5,870 light years. Not sure about Sh2-232, but it is likely similar to Sh2-235, since they appear to be part of the same cloud of hydrogen. For reference, this field is only about 3 degrees (6 moon widths) from the more famous Flaming Star and Tadpole Nebulae.
This area is not often imaged - the emission signal here is extremely weak and subsequently I found it quite hard to process.
Imaging telescope: Takahashi FSQ130ED
Imaging camera: ASI 2600MM
Mount: Takahashi EM 400 Temma 2M
Guiding telescope: Takahashi FS60CB
Guiding camera: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Capture Software: Sequence Generator Pro, PHD 2
Processing Software: Astro Pixel Processor, PixInsight, Topaz DeNoise, Photoshop
Filters (50mm): Astrodon Ha (3nm), Astrodon OIII (3nm), Astrodon SII (3nm),
Accessories: SeleTEK2 controlling Robofocus Focuser, ATIK EFW3
Original Resolution: 4500 x 3000
Dates: 6th Jan - 8th Jan 2022
Frames:
Astrodon Ha 26 x 10'
Astrodon OIII 22 x 10'
Astrodon SII 21 x 10'
Total integration = 11 hours 30 Mins.
Center (RA, Dec): (85.443, 36.096)
Center (RA, hms): 05h 41m 46.396s
Center (Dec, dms): +36° 05' 44.398"
Size: 89.7 x 59.8 arcmin
Radius: 0.899 deg
Pixel scale: 1.2 arcsec/pixel
Orientation: Up is 183 degrees E of N
This area is not often imaged - the emission signal here is extremely weak and subsequently I found it quite hard to process.
Imaging telescope: Takahashi FSQ130ED
Imaging camera: ASI 2600MM
Mount: Takahashi EM 400 Temma 2M
Guiding telescope: Takahashi FS60CB
Guiding camera: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Capture Software: Sequence Generator Pro, PHD 2
Processing Software: Astro Pixel Processor, PixInsight, Topaz DeNoise, Photoshop
Filters (50mm): Astrodon Ha (3nm), Astrodon OIII (3nm), Astrodon SII (3nm),
Accessories: SeleTEK2 controlling Robofocus Focuser, ATIK EFW3
Original Resolution: 4500 x 3000
Dates: 6th Jan - 8th Jan 2022
Frames:
Astrodon Ha 26 x 10'
Astrodon OIII 22 x 10'
Astrodon SII 21 x 10'
Total integration = 11 hours 30 Mins.
Center (RA, Dec): (85.443, 36.096)
Center (RA, hms): 05h 41m 46.396s
Center (Dec, dms): +36° 05' 44.398"
Size: 89.7 x 59.8 arcmin
Radius: 0.899 deg
Pixel scale: 1.2 arcsec/pixel
Orientation: Up is 183 degrees E of N
SII, Ha & OIII in the above image:
Sky Map & Finding Chart
Annotated Image: (Click on image to enlarge)
