For all these images, click on the thumbnail for a medium size image (normally 800x600) and on the link in each description for the full size (around1390 x 1040) image.
M42 is rather difficult for me. There's a 20KV High voltage overhead line running along the field to the South of my Observatory, and until M42 is well past the zenith the wires are bang across the target. But on 14th. January 2006 even though it was Full Moon, it was the first clear night for ages! So on with the narrowband filters and have a go. Unfortunately it was a bit hazy at the lower altitude, indeed the session was cut short by thin cloud, and maybe my focus was slightly soft, but I managed to get enough information to produce a reasonable image. Artemis 285, TMB105 refractor. Luminance from Ha, colours using Ha, O3, S2. Ha 4 min and 2 min. frames (to get the core), O3 and S2 3 min. frames. Then played around with in Photoshop to produce a reasonably technicolour tho' probably totally false image. Full Size |
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IC 443 is a Supernova remnant in Gemini, just East of 3rd. magnitude eta Geminorum. Although the magnitude is listed as 12, it is quite large at 50 x 40 arc-minutes, so the surface brightness is low, making it a difficult target in skies that are not completely dark. But I was able to capture this image in the early hours of 22nd. January 2006 with the last quarter Moon just rising, and well away from the target. Artemis 285 with TMB 105 refractor and 0.63 reducer. Luminance 12 x 4 minutes H-alpha filter, Colours each 3 x 3min binned 2x2 H-a, O3 and S2. Full Size |
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New Moon, no wind and crystal clear sky! Too good to be true? Well almost, because on 29th. January 2006 although conditions were ideal for the first time in weeks I had equipment problems and a jammed patio door which didn't help! I got the equipment sorted, but the door is still jammed (next day). So time slots were lost, and none of the original targets imaged. BUT I decided to try for a crisper image of Messier 82 than my previous attempt in December 2004 with my MX716 camera. And fortunately everything behaved itself - good guiding and excellent contrast. Full size. Artemis with Mirage at f6.3. Luminance 12 x 4 minute, RGB each 3 x 2 min binned 2x2 plus extra red from 12 x 4 minute H-alpha - this nicely shows up the gas outbursts. Further images showing a supernova can be found here |
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M82 as can be seen from the above image is very disturbed with huge outbursts of gas. These are believed to arise from star birth and supernovae triggered by an encounter with the nearby M81. This stretched image faintly shows further extensions of the gas plumes. The UK skies will probably never be clear or dark enough to fully capture these, but they are beautifully realised in an image from Jim Misti's 32" telescope in Arizona, here. Note that my stretched image is rotated from the above to match the orientation of Jim's. |
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The Cone Nebula, NGC2264 in Monoceros is part of a much larger area of nebulosity. The upper section of this image is part of the 'Fox fur' nebula, so named because of its similarity to a fox skin laid out. This was taken with the TMB 105 refractor and .63 reducer. The combination isn't perfect, hence some distortion nearer the edges and a degree of blurring due to poor seeing is also apparent. I hope to revisit this area next season (2006/7). Luminance 10 frames x 6 minutes Hydrogen-alpha, RGB each 3 x 4 minutes. Artemis camera, 17th. February 2006 Full Size |
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After a cloudy spell the skies cleared on 21st. March, and I tackled the interesting spiral galaxy NGC3184 in Ursa Major. A relatively low surface brightness galaxy but nicely face on with well defined spiral arms from a slightly barred centre. L 15 x 5 minute frames, RGB each 5 x 5 minutes. Artemis 285 with Mirage 8 at f 6.3 This was notable for a supernova in 1999, SN 1999gi. No luck this time! |
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I then decided to take a peek at Messier 87 - Virgo A, which is notable for the jet emanating from the massive black hole in the centre. Only short exposures were required to avoid losing it in the main galaxy glow. 12 x 1 minute frames at f10, 2030 mm fl, Artemis 285. Cropped out of the full frame. Looks like I've got the two main glowing areas, easily seen of course in the Hubble image here. (Mine is oriented North up.) Monochrome for now. I will return another night to image the full galaxy! |
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22/23 March 2006 was also clear although a bit hazy. So I imaged Messier 100, a nice spiral galaxy in Coma Berenices, although again with fairly low surface brightness. What I hadn't realised was that there was a new supernova in the galaxy, SN2006X, discovery on 7th. February shared by Shoji Suzuki (Japan) and M. Migliardi of CROSS (Italy). A type Ia supernova found 1-2 weeks before maximum light. Just as well I didn't try to claim it for myself! The cross hairs point to it. Art285, Mirage8 at f6.3, L 16 x 5 minute frames, RGB each 6 x 2 minute frames binned 2x2. The hazy sky unfortunately robbed the image of some fine detail and colour. Full size |
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After a week of almost continual
clear skies in Turkey, I expected to come home to wind,
rain, 100% cloud cover etc. But it was a beautiful evening
here in NE England (4th. April), so despite being travel
weary I stayed up most of the night! I originally intended
to pick up a couple of Virgo Messiers to add to my
collection, but was diverted by the unusual arrangement of
NGCs 4298 and 4302. (4302 on the left) Both mid 11th
magnitude. The tiny one to the left again is mag 17.7 PGC
169114. Art285, Mirage at f6.3, Luminance 14 frames x 5
minutes, RGB each 3 frames x 5 minutes. |
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I then had a look at the fragmented comet 73P Schwassmann-Wachmann which was brightening nicely, although at the 1280 mm focal length I couldn't pick up more than one fragment. This is the 'C' fragment. I processed 10 x 1 minute frames centred on the comet, hence the blurry stars. Late April/early May will be the best time for England. Art285 with Mirage at f6.3 |
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I know I shouldn't have, but as the Moon was getting out
of the way by 3 am or so, I decided to visit M51. First
serious attempt with the Artemis. Pleasing structure, but I
still can't get the lovely beads of colour seen in some
pics. I need to improve my processing skills! Next
opportunity I'm going to take some H-alpha frames to try to
pick up the reddish sections. Art285, Mirage at f 6.3,
Luminance 9 frames x 5 minutes, RGB each 3 frames x 3
minutes binned 2x2 |
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Well, the night of 6th. April 2006 again was clear, and
although the Moon was approaching first quarter, I decided
to try for some deep sky Hydrogen Alpha frames of M51. With
some success. I processed them into the earlier Luminance
image, with this result. a bit better in the red, but still
not quite what I was looking for. |
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Then Noel Carboni, a regular visitor to the UK Astro Imaging Group although he lives in Florida, had a play with my two images. He is a master of Adobe Photoshop, and indeed markets a very useful set of macros for that program (See his web page here). And this was the result. Thank you very much, Noel, this is exactly what I was trying to achieve. This is easily my best M51, and I think I'll be hard pressed to do better from my Hexham site! Full Size But 5 years later, see here |
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I then revisited Comet 73P Schwassmann-Wachmann. Previously I had only imaged one fragment, but this time with new coordinates managed to find and image three fragments. This is the 'B' fragment. All fragments were imaged with the Artemis 285 and Mirage at f6.3, 10 x 3 minute frames in the early hours of 7th. April 2006. This one from 0210 to 0240 UST The frame sizes are approximately 22 x 17 arc-minutes. |
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The 'C' Fragment. Imaged from 0300 to 0330 UST . There is a 158 KB .avi file showing the motion over the 30 minutes here. Indeo codec, should play in Windows Media Player. Also 148 KB DivX codec here. |
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The 'G' Fragment. Much fainter than the other two. Imaged from 0106 to 0136 UST |
With the light nights approaching I hoped to capture a few more images, but the weather was not too kind for the next New Moon time! However the night of 27th. April gave me an opportunity to image Messier 101 - the nice open spiral galaxy in Ursa Major. Very near the zenith and I experienced problems with mirror shift which led to some frames being rejected, but a considerable improvement on my MX716 image from May 2004. Art285, Mirage at f6.3, Luminance 6 frames x 6 minutes, RGB and H-alpha each 2 frames x 3 minutes binned 2x2. Full Size |
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I'm gradually collecting Messier targets, although I tend to be sidetracked! But the night of 3rd. May 2006 was promising, and although I had to wait until late for dark skies, I was able to capture this image of the magnitude 9.4 Virgo galaxy M90, also showing 13th magnitude galaxy IC 3583 and a handful of distant galaxies. Artemis 285 with Mirage 8 at f 6.3. Luminance 10 x 6 minutes, RGB each 3 x 6 minutes. Full Size |
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My Messier 101 on 27th. April turned out quite well considering the relatively small number of frames. But as for my earlier M51 I wasn't entirely happy with the colour rendering. So I sent the original frames to Noel Carboni in Florida and he kindly reprocessed them. These images are Noel's result above and my Luminance below using the colour information from his image. Again, many thanks, Noel. This galaxy contains several named NGC bright nebulae. The medium size image with annotations can be seen here. Lower image full size A wider field image can be found here And a supernova in 2023 here |
NGC 6543 - the Cat's Eye Nebula in Draco is a nice bright planetary nebula. I previously imaged it with my modified Vesta Pro Webcam, but on the night of 1st. June 2006 decided it was time to let the Artemis have a crack at it - the bright summer night sky at my latitude precludes much faint object imaging. It's rather lost in the much larger chip of the Artemis 285 compared to the webcam! IC4677 can just be seen in this stretched (uncoloured) crop from the main picture. The subframes were all 1 minute at f10 with the Mirage - longer subs will probably show up IC4677 more clearly, also the outer halo of the Cats eye. But that will have to wait for darker Autumn skies. A deeper monochrome image here. |
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In mid June My Artemis 285 'died'. It had for some time exhibited an occasional fault, but this time it did not return to life. Steve Chambers, the principal designer of the camera, kindly replaced the Artemis main board for me, and the camera returned to life just long enough for me to obtain plenty of data of the beautiful Iris Nebula, NGC 7023 in Cepheus, on the nights of 14th and 15th. July 2006. Artemis and Mirage at f6.3. The cluster just to the right of centre is Collinder 427. Luminance 10 x 4 minutes, RGB each 4 x 4 minutes. |
Messier 74, the beautiful face on spiral galaxy in Pisces is a tricky target, having a fairly low surface brightness. My previous MX716 image from November 2004 was rather disappointing, but this time round, with 22 x 5 minute Luminance frames from both 23rd. September 2006 and earlier attempts, and RGB colour information (each 3 x 3 minute binned 2x2) from 23rd. September, this was the eventual reasonable result. Artemis 285 and Mirage 8 at f6.3 This image is the Astronomy Now M74 Messier Challenge winner, and was featured in the November 2006 issue . It appeared again in the May 2010 issue. |
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On 31st.October 2006, Autumn finally arrived with a cold Northerly airstream, and a crisp clear (albeit moonlit for the first part) night. I spent the moonlit part imaging the North American and Pelican nebulae in Cygnus with the Artemis 285 and 135 mm fl camera lens. MUCH better than my effort last year! Luminance H-alpha 8 x 10 minutes, RGB each 4 x 4 minutes binned 2x2, Ha, O3 S2 narrowband filters. |
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Once the Moon had set, I moved on to the large and very faint supernova remnant Sh2-240 (Simeis 147) in Taurus. 6 x 15 minute Ha Luminance frames, and 5 x 6 minute RGB frames were required. The RGB were H-a, S2 and O3 binned 2x2. A bit 'noisy' at first, but adding another 10 Luminance frames the following night showed an improvement. Still a little fussy, probably due to the high level of stretching required, and the resolution limits of the small lens. Full Size (Note: 540 KB!) |
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I dunno - lots of cloud, rain wind etc. recently, yet we've had some pretty clear nights. And the night of November 23/24 was one of them. I was home quite late so didn't have time for a *really* long session, so decided to have a go at M1 and add data to a few frames I collected some weeks ago. Very windy and poor seeing, so the guiding wasn't perfect and I used the Astro Plugins Star Rounder tool to improve the slightly elongated stars. But good enough until I get a still night! Artemis 285, Mirage 8 at f10 (2030 mm fl) Luminance 15 x 10 minutes, RGB each 4 x 5 minutes. The Hubble space telescope produced a superb image of M1. I've matched it to mine and made a 'mouseover' for comparison. It shows that the finer features in my image aren't processing artifacts. It also shows how mediocre mine really is! Must try harder!! Click here for the mouseover image. |
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