A double dataset was processed for this one.  From 7th March 2011 27 subs at 10-minutes per sub, and from 13th March 36 subs at 5-minutes per sub.  The odd shaped resulting image shows the overlap wasn’t too good between the two frames.  In fact the overlap wasn’t bad – it was the frame rotation (due to poor polar alignment) between the two dates that caused all the problems.

I just processed this data from September 2nd 2010 to keep my hand in   This colourful cluster (which is rarely imaged) is Stock2 and it lies in the constellation Perseus – right next door to the Double Cluster – which is why it rarely gets a look-in.  This pretty cluster covers a lot of ground as this image was taken with the Sky 90/M25C combo which gives a massive 3.3 x 2.2 degree field of view.  In this image North is to the right as the camera was used in “portrait mode” on the Sky 90.

This is data from 10th November 2010 and this time I have used all the 54 sub-exposures (4-minutes per sub) by treating the raw data slightly differently.  If I simply colour convert the 16-bit FITS files, then some come out as if there was cloud (or fogging of the CCD).  If however I first convert to IEEE floating point format and then do the colour conversion – the problem goes away – not sure why – don’t care why – it allows me to use all the data and that’s all I care about.

I have shown this one before a while back.  I looked at my star map to find two differently coloured (bright) stars that were also pretty close together so that I could get both in the FOV of the Sky 90/M25C.  Having done Albireo a long while ago, I found this beautiful star-pair Algol (beta Persei) and Rho Persei in Perseus.  Processing by yours truly

Some more old data off the hard drive – this time from 3rd March 2011 – 47 sub-exposures at 5-minutes per sub using the Sky90 and M25C combo.  NGC7788 and NGC7790 a pair of open clusters in Cassiopeia – North is to the right in this image.  You can also see a small region of emission nebulosity which I can’t find on The Sky 6.  Anybody know what it is?

You will see in the comments below that Tom How identified it correctly as SH2-168.  The reference to CTB1 is an “in joke”

Rainy day so I looked up an old piece of data to process – this one from March 2011 just came to hand.  O.K. fairly boring star field – why on Earth did he bother with this one?  It’s only 8 subs at 300 seconds per sub, but the answer lies right in the middle of the image, get your magnifying glass out   I did a quick image of this region and then decided that the object was just too small to bother taking any more data.

So I get it right – this is planetary nebula NGC2372 in Gemini – and it’s a little’un!

Noel Carboni has just processed this data from a few days back.  Almost perfect imaging conditions that night and Noel had requested a Sky 90 image of Mizar and Alcor in Ursa Major – so that’s what I did

Noel recently processed this Chara data taken at the New Forest Observatory.  Chara, or Beta Canum Venaticorum goes with Cor Coroli or Alpha Canum Venaticorum as the pair of stars that make the constellation Canes Venatici – the hunting dogs.  As per usual, in this image North is to the right.  Don’t see that many images of Cor Caroli or Chara about

How many stars can you see when you look in the region under the handle of The Plough/Big Dipper?  Chances are only one shows up – this one – Cor Caroli in the constellation Canes Venatici.  In this image North is to the right.  Image processed by Noel Carboni who expertly removed a rather nasty lens flare caused by Cor Caroli – and photons grabbed by Greg Parker at the New Forest Observatory.

Noel Carboni has just finished processing this wide-field deep-sky image from a few days back.  This is the Whale & Hockey stick region in Coma Berenices and you can also see “The Mice” lower far left.  Shows that I don’t have the best setup for galaxy work, so this time of the year is always a bit difficult for me.  Managed to salvage this one by balancing the galaxies with the bunch of bright stars at the bottom – but I can’t always play this trick.  The wide-field setup is really built for star fields and large nebulae, that season is due soon

Noel has just finished processing the recent Leo Trio data and added in some very old Hyperstar 1 data (taken on an H9C!) from way back.  Needless to say, Noel’s process is far better than my feeble effort and you can see it in all it’s glory here