Archive for the “IOM” Category

Imaging Object of the Month

Got the final bit of data on this one last night.  This is a 2-framer using the Canon 200mm prime lenses and Trius M26C OSC CCDs on top of the Paramount ME.

Main North America frame is 9 hours and 40-minutes total using 20-minute subs.  The right hand frame (with Deneb) is 10 hours and 20-minutes total data time using 20-minute subs.

The ONLY negative thing with the 200mm lenses is the bad ghost flaring from any bright stars in the image.  This makes it an ideal imager for regions like IC2087 where there are hardly any stars (let alone bright ones) to be seen.

 

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A couple of nights ago I managed to grab 24 x 20-minute subs of the M52 region using the 2 x Canon 200mm prime lenses and 2 x Trius M26C 10-Megapixel OSC CCDs.  I had to shut down for an hour in the middle of the imaging run when a cloud bank came over, and I was not very precise in setting up the frame after the meridian flip which is why the image is a lot narrower than it should be.  Still – “claws” can be seen (just) and the Bubble and M52 came out reasonably well.

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I have decided that the image for this month is the one you can see below – the very deep Canon 200mm prime lens single-framer of Cassiopeia from the Gamma Cass nebula (IC59/63) all the way down to the PacMan nebula.  Although the nebulosity is nothing to write home about – the star field came out very nicely.  And this got me thinking (always bad) – I now need to see how narrowband filters perform on this rig, so it is possible (if I get the weather) that this Image of the Month will also appear as a couple more images of the month as I add in some narrowband data.

I have incorporated narrowband data into earlier RGB work using the Sky 90 and M25C camera.  Images include, the whole of the Veil nebula, the Horsehead nebula region, the M42 region, the Jellyfish nebula region, the IC1396 region, and finally I added some H-alpha data to the M31 image to bring out the emission nebula regions in that galaxy.

 

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A while back I asked for submissions to run a deep-sky image of the week from this site. The response was not good. In which case I will post up a deep-sky image of the week from my own collection. I’ll kick off with this recent very wide field of the Cocoon region taken with the 2 x Canon 200mm lenses and the Trius M26C OSC CCDs.

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Going back to 28th September we had the most amazing total Lunar eclipse, this image captured using a Canon 5D MkII on a TS80 triplet at f#6 all sitting on a tripod, shows pre-totality, totality, and post totality.  And yes it really was VERY red 🙂

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As it is the first of the month today – it is a good day to resurrect the Deep-Sky Image of the Month 🙂

Just taken recently, I have chosen the Sky 90/M26C 4-framer of Kemble’s Cascade taken just a few days ago.  As I mentioned in the original post – I have wanted this FOV for something like 8-years, but it is only with the Mega-WASP array that it has now become possible to do a 4-framer in a single evening.  Expect a lot more of these large field views in the coming months 🙂

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I feel in such a good mood having just completed the mega-WASP upgrade that I think I will resurrect the almost forgotten Image of the Month 🙂

Here is the very recent Polaris image taken with the mini-WASP array – 36 x 5-minute subs using all 3 Sky 90s with (non Trius) M26C OSC CCDs.

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This month’s image is a wide-field taken using the amazing Canon EF200 f#2.8 prime lens and a Canon 5D MkII DSLR.  Piggy-back mounted on the C11 I took 10 x 5-minute subs at ISO 400 and f#4 with an IDAS filter attached to the EF200.  As expected the Heart and Soul nebulae didn’t come out too well with the un-modified 5D MkII, but I am very pleased indeed with the nice round stars from corner to corner over a 10 x 6.8 degree field of view – something well beyond the capabilities of my refractors.  Looks like I will be using this rig for star fields and reasonably high resolution constellation shots.

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I see the Image of the Month didn’t pop up a couple of days back.  Either I didn’t do one or it’s lost in cyberspace.  Never mind, here’s one a couple of days late.  This is the recent M11 in the Scutum star cloud image taken a couple of months back using the mini-WASP array.  This is rapidly becoming my favourite image, mainly due to all those stars 🙂

 

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For this DSS2 image of the Tulip nebula region in Cygnus I just kept adding frames until the computer gave up 🙂

 

 

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