Archive for the 'Astrostuff' Category

Observing Report 13th-14th and 14th-15th December 2012 (Geminids Part 1)

Posted by on December 15th 2012 in Astrostuff, Observing Reports
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The best period for seeing the Geminids was from dusk on Thursday to dawn on Friday. I was ready early with the D50 set up on the mount, toting the 35mm prime, and intending to track a bit of sky around Taurus. The evening started cloudy but I was convinced that there would be some clear spells before sun-up. Suffice to say that there wasn't a single cloud-gap all night and I gave in to sleep at around 4 a.m. when the mist came down and then froze. It had been a wasted night, and the fact that folk in other places had been seeing the best Geminid display for many a year was really rubbing it in.

The forecast for the next night was slightly better, the cloud was supposed clear sometime around midnight, so I decided to have another go even though the meteor-rate would be much lower. Same kit, this time tracking a vague area between Lynx and Ursa Major. The clouds did part and there was still a fair number of Geminids whizzing about, I took 300 pics and managed to catch just the one meteor trail. It was a promising start.

I re-aimed the camera and rattled off another 35 shots in the direction of Camelopardalis before the constellation became obstructed by the observatory roof. By this time Leo had risen so far that it was fully in the field of view so I aimed at that and ran off another 300 shots before it clouded over fully, ending the session.

After a short sleep and a wonderful afternoon of festive shopping I got around to processing the images, here's the best of the Geminids that I caught on camera:

 Geminid meteor in Ursa Major
Main image: 19 x 30s subs @ ISO 400, stacked with DSS
Luminance layer: 1 x 30s sub processed in PS CS3
Final layering in PS CS3

Here's a screenshot from Starry Night Pro Plus 6, showing roughly where the FOV was:

 

 The FOV of the 35mm prime on the D50
The red triangle marks the radiant point of the Geminid meteor shower
Compare the two images and you'll see that those naughty twins appear to have shot the Great Bear up the arse

Observing Report 10th-11th December 2012 (Part 2 – Away in a manger…)

Posted by on December 12th 2012 in Astrostuff, Observing Reports

Here's another one - M44 - Sir Patrick Moore's favourite object on the Moore Winter Marathon list.

The refractor has introduced some odd colours to the mix, I've left them in and enhanced them because they look a bit Christmassy 🙂

M44 (aka NGC 2632, Praesepe, The Beehive Cluster, Cr 189), an open cluster in the constellation Cancer.
Subs: 12 light @ 300s, darks and bias frames, ISO400.
Spikes added using Noel's Actions.
1000D on the C80ED-R refractor, guided with PHD.

Observing Report 10th-11th December 2012 (Part 1 – Kemble’s Cascade)

Posted by on December 11th 2012 in Astrostuff, Observing Reports

Here you go - Kemble's Cascade - a fine asterism and one of the objects on the Moore Winter Marathon list.

To me it always looks like a waterfall of colourful stars spilling from the NGC1502 cluster.

You'll need to click it to see it in any great detail.

 

Kemble's Cascade, an asterism in the constellation Camelopardalis.
2 stitched images. Subs: 12 & 8 light @ 150s, darks and bias frames, ISO800.
1000D on the C80ED-R refractor, guided with PHD.


You won't need a telescope - you should be able to see the Cascade well enough through binoculars, and it's a fair size - you could fit five of our Moons into the above pic.

It's easy to find too, so long as you can locate the Big W:

Observing Report 29th-30th November 2012 (Another coloured Moon)

Posted by on December 1st 2012 in Astrostuff, Observing Reports

I was out Moon-gazing again the other night. It was so damned cold that I didn't feel the need to use the camera cool-box, the sensor was well below zero throughout the imaging run. This time I decided to get full-frame shots instead of video. With the 1000D on the 6" R-C I took 50 subs with APT, stacked them in K3CCDTools3, applied wavelets in RegiStax and colour-enhanced the result in Photoshop. I reckon it's a bit better than my previous effort:

Observing Report 17th-18th November 2012 (Part 1 – in like a lion, out like a… bull)

Posted by on November 18th 2012 in Astrostuff, Observing Reports

I spent ages outside in the freezing cold last night trying to catch some Leonid (LEO) meteors on camera. There were quite a few about and I was pointing the camera in the right direction, but after taking 443 30-second exposures I'd not managed to get one in shot.

I did, however, manage to snap this little beauty racing eastward between Auriga and Cassiopeia - it's a Taurid, probably a Northern Taurid (NTA):

I'm quite pleased with that result, and the whole exercise was good practice for next month's Geminids (GEM).

Observing Report 2nd-3rd and 5th-6th November 2012 (Addendum)

Posted by on November 16th 2012 in Astrostuff, Observing Reports

Nearly forgot about this one!

I was using the Canon EOS 1000D on the 6" R-C scope and trying out the Planetary Mode of BackyardEOS. Using this mode of the software lets me make .avi files which can then be frame-stacked by other software such as RegiStax. The colours are natural, all I've done is to increase the saturation using Photoshop. The result's rough & ready but at least it's a start: