Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  9 Cas  ·  PK116+00.1  ·  The star 9Cas
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CTB1 (SNR G116.9+00.1), vdB159, Fr1(oc), K12(oc), H21(oc), LBN576; Cassiopeia, Thomas V. Davis
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CTB1 (SNR G116.9+00.1), vdB159, Fr1(oc), K12(oc), H21(oc), LBN576; Cassiopeia

Getting plate-solving status, please wait...
CTB1 (SNR G116.9+00.1), vdB159, Fr1(oc), K12(oc), H21(oc), LBN576; Cassiopeia, Thomas V. Davis
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CTB1 (SNR G116.9+00.1), vdB159, Fr1(oc), K12(oc), H21(oc), LBN576; Cassiopeia

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Description

CTB1 (SNR G116.9+00.1), vdB159, Fr1(oc), K12(oc), H21(oc), LBN576; Cassiopeia

Astro-Physics 305mm f/3.8 Riccardi-Honders astrograph

KAF-16803 FLI Proline

Total Exposure Time: 14+ hours H:R:G:B 340:460:460:15:15:15 minutes unbinned RGB used for star color and vdB159

July 2011; Inkom, ID

Comments: CTB1 is a very, very faint supernova remnant in Cassiopeia. It is very difficult to image in any detail due to its very low surface brightness. It can mainly be imaged with H-alpha filters but it also has a small but definate OIII component. vdB159 is very small (1.5 arcmin) reflection nebula adjacent to magnitude 7.68 star BD +61 2573. Since it is not worth imaging by itself, I thought a better composition was to include CTB1.

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CTB1 (SNR G116.9+00.1), vdB159, Fr1(oc), K12(oc), H21(oc), LBN576; Cassiopeia, Thomas V. Davis