Sunday, 22 January 2012



The Sun, of course, taken 14.1.12, with the DMK31 and PST on the AP mount. Hopefully I've got the measure of sticking two frames together to produce a whole Sun.
Not a good day, and I still haven't got the trick of balancing the gamma to allow prominences and disc detail to show well.
Processed in Registax6, better than Registax5 by a good way, then finalised and coloured in Photoshop.

Friday, 6 January 2012

The Moon on 5.1.12


A mosaic of 4 frames taken with a DMK31 camera in a William 98FLT. For easy matching up all of the frames, 6 actually, but I only needed 4, I ran the videos for 30sec each and processed each in Registax with the same wavelet parameters. Then stuck them together in Photoshop on a larger new frame, flattened them and finished off the processing there.Though cloudless the sky had plenty of haze and was turbulent, recovering from a stormy day and previous night, with up to 90mph winds.

NGC2392 the Eskimo nebula

Taken, unusually, with the H9C, which is my usual guide camera. A small camera for a small nebula, so it's really more suited to it, and I should do more this way.

The Moon was a problem for choice of targets with nebulosity. It was big enough to turn almost all the sky to milk.

The exposure was 19x90sec, with no flats, I should have, and no bias either. Darks never used with this camera. The telescope was the Vixen VMC260L at native FL.

Acquired and pre-processed in Astroart, then finished off in Photoshop.

Sunday, 18 December 2011

IC405 in Auriga - the Flaming Star nebula

Taken on 17.12.11, with the usual kit, an M25C in the William FLT98, guided by an H9C in the Vixen VMC260L.
The exposure was 23x300sec.
A hazy sky with poor seeing, the guiding fluctuated quite a lot. No clouds though.
The Moon hadn't got up when I started but contributed a bit of light later.
It was cold in the dome, but not changing much.
Acquired in Astroart5 and preprocessed there to finish off in Photoshop.
I process on one machine and post from another, but I don't know which monitor is the more accurate for brightness and colour. The posting one is new so bear with me till I get them compatible.
The brightness at the bottom left is IC410, a similar nebula. Another night perhaps.

Wednesday, 30 November 2011

Sorry, but another one of the Sun, on 30.11.11

A clear day but hazy again. I had to take a look and found this huge prominence, and a very busy Sun, so had to take it's photograph. It was using the now usual kit of PST (must get something better, though this one is a very good one), and DMK camera on the 900GTO mount at Austerfield. A problem is that the chip I have isn't large enough to cover the whole Solar disc, so I'm looking for a focal reducer. Is there one made in 1.25"? The alternative is to extend the focal length and concentrate on smaller areas of the disc. The clouds couldn't keep away long enough for me to follow the prominence long enough to make something of it. The telescope was tuned for prominences rather than face detail. Processing done in Registax6, fine software, and Photo Shop.

Sunday, 20 November 2011

The Sun.... again

Taken on 19.11.11. The day was drawing to an end and the Sun was setting behind the trees at the edge of the field. The photograph was taken through them as can be seen from the shading to the lower right. This is the first time Lesley Hardware and Elaine Booker had photographed the Sun; they used the IS DMK camera in the PST mounted on the 900GTO mount, a very convenient arrangement. There was a lot of fiddling with the difficult PST focusing(instructions from them to Paul Booker operating the tiny focus knob), and camera settings, to try to get a good balance with both the prominences, and face detail. Not easy with such a wide difference in brightness. They were also hurrying to get the job done before the trees took over completely. The focal length of the PST precludes getting the whole disc onto the chip, but it may be better in summer. The processing was done in Registax 6 and finished off in Photo Shop CS2.

Wednesday, 16 November 2011

The Sun - 15.10.11

These photographs are two versions of the same file, taken on the 15th of October, with the Imaging Source DMK31AU.AS camera. It was used with the Coronado PST, on the AP 900GTO mount. The uncoloured one is the original version, processed in Photo Shop in the usual way. The coloured one was inverted first then processed. The camera is monochrome, so the colour has been added in Photo Shop. A busy Sun indeed, but the reason for the post is to ask for opinions as to which method is preferred.

Sunday, 16 October 2011

The Moon ... of course





These were taken on 14.10.11 while testing the Imaging Source DMK 31AU03 camera. I was torn between colour and mono and ended up with the mono. Not happy with it to start but getting used to it and liking it more each time I use it.
Most were only a minute's worth of frames, and all were processed in Registax6, with a little, a very little, in Photoshop. I think I've identified each location correctly, but if I'm wrong, please advise.
The first has Piccolomini on it, the next has crater Neander, the third has crater Gutenberg and the last is of Posidonius.