Sh2-290 (Abell 31) – A Fading Ghost in Cancer

Image Title: Sh2-290 (Abell-31)

Copyright: Shobhit Raj

Date image was taken: April 02, 2025

Location: Gandhinagar, GUJARAT India

Data Acquisition Method: Personal Telescope Setup

If other selected:

Image Description and Details: Total Integration: 61 h 36'

Mainly composed of hydrogen and oxygen, SH2-290 is about 10 lightyears across, incredibly faint and old. Sitting at 2000 light years away in the constellation of Cancer, it's one of the largest known planetary nebula. This type of nebula is formed when a low-mass star blows off its outer layers at the end of its life, in this case, estimated to be about 130000 years ago.

Equipment Details: OTA: TS Optics CF-Apo 90mm + TSCFRED90 0.8x reducer
Mount: iOptron CEM25P
Camera: QHY294M
Filters: Astronomik Ha 6nm, Oiii 6nm, Sii 6nm, D-RGB
RGB: 228×120″ (7.6hrs) [76 Red, 76 Green, 76 Blue]
Sii: 46 x 300" (3.8 hrs)
Ha: 301 x 300" (25.08 hrs)
Oiii: 301 x 300" (25.08 hrs)

Name: Shobhit Raj

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