Iris and Ghost Nebula RASA 8 (Brandon Tackett)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: Iris Nebula · LBN 487 · LBN 495 · LDN 1168 · LDN 1170 · LDN 1171 · LDN 1172 · LDN 1173 · LDN 1174 · LDN 1177 · NGC 7023 · Sh2-136 · T Cep · VdB139 · VdB141

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Iris and Ghost Nebula RASA 8

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Iris and Ghost Nebula RASA 8

The last couple of weeks I have been working on M8 (Lagoon) nebula with the RASA in both RGB and Narrow Band. Once it has set around midnight, I have been turning the scope to a plethora of great nebula targets in the night sky.

This particular night I wanted to give the Iris and Ghost Nebula a go and what a go it was. The first sub were exciting and then I got so excited I quickly stacked them in DSS the following morning. I didn't realize until late into the processing that DSS did not eliminate a few satellite streaks that normally would have been removed in pixinishgt stacking. I decided to table the redo until a cloudy night and still finish the edit with the satellite trails.

The Iris Nebula (NGC 7023 and Caldwell 4) is an extremely fascinating and bright reflection nebula surrounding an open star cluster in the Constellation of Cepheus. The central area of the iris is reflecting the a magnitude 7 star. The nebula is approximately 1,300 light years from earth and is 6 light years in diameter.

The Ghost Nebula (Sh2-136) is a globular reflection nebula with three protrusion that appear to be ghost like with a dark nebula adjacent (LDN 1177).

Original
Final
B
C

B

Description: Removed Satellite Trails

Uploaded: ...

C

Description: Picture in a Picture to Show More detail on the Ghost Nebula

Uploaded: ...

N.I.N.A. Users
Central USA
Dark Nebula
Celestron RASA

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Status	Advanced success
Started	...
Astrometry.net job	5137149
PixInsight job	8VOF37M9YF0XUP72YOU3EIXSBCHOUGD4
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h08m04s.92
RA (top/left)	20h53m32s.63
RA (top/right)	21h21m53s.38
RA (bottom/right)	21h23m46s.75
RA (bottom/left)	20h52m58s.22

Dec (center)	+68°22′23″.6
Dec (top/left)	+67°26′56″.8
Dec (top/right)	+67°21′39″.9
Dec (bottom/right)	+69°12′41″.3
Dec (bottom/left)	+69°18′27″.8

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Iris and Ghost Nebula RASA 8

Iris and Ghost Nebula RASA 8

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Iris and Ghost Nebula RASA 8

Iris and Ghost Nebula RASA 8

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