- Andromeda Galaxy (+Ha on 15 Dec 13 - "mouse-over"
image to see Ha!!!)
(image above is
reduced-size | other sizes: medium
2.5 million light years
||Takahashi FS-60C @ f/6.2
||Takahashi EM200 Temma II
||QSI 540wsg @ -15C
|| Astrodon Ha (3nm), Astrodon Tru-Balance I-Series LRGB Gen
||9x15m Ha; 6x5m,10x4m L; 2x5m ea RGB
(all bin1x1); AstroArt5, CS4 (cropped, 10xdarks/flats/fdarks/bias)
|6,15 December 2013 - Las Cruces, NM
Published in YahooNews,
25 Jan 14 (screenshot).
Published in Space.com,
24 Jan 14 (screenshot).
- 1st slot in Space.com "January 2014 Night Sky Photos"
- Listed in Space.com "Amazing
Pictures of M31"
Published by Canadian
Space Agency, 29 Jan 14 (screenshot).
Imaged over 2 nights. Most recent night (15 Dec: 2.25hrs Ha -
Some details on "Ha" are in my blog, HERE), I
had corrected the backfocal distance for flattener from earlier outing.
Difference when Ha is added is only slight compared to origLRGB
and not as apparent as M33Ha
result from earlier in the year. For 6 Dec outing, here are my
original comments: Just used Tak flattener as reducer adapter I had
machined did not work out (backfocal distance was still a tad too long).
Believe not optimal backfocal distance here, either (coma at corners was
huge), so I still have some testing to do.
Copyright Jeffrey O. Johnson