Emission Nebula NGC1491 in Perseus
(RA 4h 03.4m , Dec. +51°19', 25 x 25 arcmin.)
This emissiom nebula is located about 6°25' NEE of a Persei or 1° NNW of l Persei (see finder chart below). Its listed size seems way too generous - 4 x 4 arcmin. is probably more real.
The above image was obtained on August 12, 2001 from Harrowsmith, Ontario. Cookbook 245 LDC camera was used on Celestron Ultima 8 SCT with f6.3 focal reducer. Telescope was autoguided with Cookbook 211 LDC camera on a piggybacked 500mm f8 telephoto lens. Seven white exposures (120 sec. each) were combined inAIP4WIN.
North is to the left.
Map created in Guide 7.0 - 7°45' x 7°45'. North is up.
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© Jan Wisniewski