Astrophotography by Torsten Mueller


ARP 21

S
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Object Information

Description Very faint and small three armed sprial
Type S
Brightness 14.7 mag (vis)
Apparent Size 1.1' x 0.7'
Distance 386 MLy

Exposure Information

Date 2020-01-05
Location Goldbach Remote Telescope
Optics GSO 12" RC f/5.6 (TS CCDT47 Reducer)
Camera ZWO ASI1600MMPRO
Integration 5x240 sec.
(0.33 h total)
Image remarks Exact dates not loger known, just collected some data from my harddrive