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Four-for-one: Bubble Nebula, Salt and Pepper cluster, Northern Lagoon Nebula and Nova Cassiopeiae 2021


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One area of space includes Messier 57 Cassiopeia Salt and Pepper Nebula; Caldwell 11 Bubble Nebula; NGC7538 Northern Lagoon Nebula; and by special request also contains the supernova Nova Cassiopeia 2021, back again to magnitude 6.96.

Captured on 23rd July 2021 in HaRGB.

The supernova is the red star in the lower centre. Do supernovas radiate energy in the Hydrogen-alpha band?

Image comprises:
9x 300s each of red, green, blue Baader
6x 300s Baader 3.5nm Ha

Esprit 80, ASI1600mm Pro, HEQ5 Pro
Starwave 50mm guidscope, ASI290mm Mini
AstroPixelProcessor, PHD2, Nina, Gimp.

1561824160_BubbleHaRGB.thumb.jpg.40bf9c72e33384c99c2b76299d5d16fb.jpg

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2 hours ago, Padraic M said:

One area of space includes Messier 57 Cassiopeia Salt and Pepper Nebula; Caldwell 11 Bubble Nebula; NGC7538 Northern Lagoon Nebula; and by special request also contains the supernova Nova Cassiopeia 2021, back again to magnitude 6.96.

Captured on 23rd July 2021 in HaRGB.

The supernova is the red star in the lower centre. Do supernovas radiate energy in the Hydrogen-alpha band?

Image comprises:
9x 300s each of red, green, blue Baader
6x 300s Baader 3.5nm Ha

Esprit 80, ASI1600mm Pro, HEQ5 Pro
Starwave 50mm guidscope, ASI290mm Mini
AstroPixelProcessor, PHD2, Nina, Gimp.

1561824160_BubbleHaRGB.thumb.jpg.40bf9c72e33384c99c2b76299d5d16fb.jpg

Nice widefield image. You also caught the bottom of the Lobster Claw nebula.

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