Leo Triplet 19 Feb 2012

[MarkS]

Leo Triplet last night.  Here's a quick pre-process.

62 x 5min at ISO 800.  H-alpha modified Canon 350D on Tak Epsilon 180ED with IR/UV filter only.



Larger version here (full size but cropped):
http://www.markshelley.co.uk/Astronomy/2012/triplet19022012.jpg

SQM-L reading (at zenith) was 20.9 (nearly as good as Saturday's imaging event) which translates into a naked eye limiting mag of just over 6.0
Temperature fell from -1C to -5C during imaging.  
Guiding accuracy 0.22 pixels RMS using QHY5 at 300mm on EQ6 mount.

Mark

[Fay]

Really nice Mark, very sharp & good colour

[julian]

That's a great image Mark.
Superb detail.
Composition is also good with you using the rule of thirds with the galaxies.

[JohnP]

Looking very good Mark (as normal) - top marks - John

[PhilB]

It certainly puts my attempt in the shade!

[RobertM]

That looks lovely Mark, plenty of detail in those galaxies.