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Contains:  NGC 1027, IC 1805, IC 1795, NGC 896
Getting plate-solving status, please wait...
IC1805 SII/Ha/OIII, 


            Jim Coughlan


Technical card

Resolution: 4378x3516

Dates:Nov. 17, 2017

Frames: 32x1200"

Integration: 10.7 hours

Avg. Moon age: 28.62 days

Avg. Moon phase: 0.93% job: 1820618

RA center: 38.242 degrees

DEC center: 61.379 degrees

Pixel scale: 2.329 arcsec/pixel

Orientation: 359.422 degrees

Field radius: 1.817 degrees

Locations: Home Observatory, Near Louth, England, United Kingdom

Data source: Backyard


I have perhaps stretched things a little too far and introduced some noise which would require a lot more exposure time to smooth out given the same degree of stretching. However, there is 4 hours of S2, 2 hours 40mins of Ha and 4 hours of O3 for a total integration time of 10 hours and 40 minutes.

Interestingly the S2 signal was noticeably stronger than the O3, so for those wishing to Bi-Colour this one please note. Teamviewer12 performed well last night enabling me to enjoy the comfort of my lounge for much of the session.



Jim Coughlan
License: None (All rights reserved)

Sky plot

Sky plot


IC1805 SII/Ha/OIII, 


            Jim Coughlan

In these public groups

The refractors!