Archive for the “Projects” Category

Projects undertaken at New Forest Observatory

The missus kindly held up a piece of A4 paper this lunch time outside in a howling gale so I could project an image of the Sun onto it.

An 80mm refractor with a 5X Barlow was used.  Yes the image is upside-down just as it came out of the refractor :)

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The 3rd (and final) Sky 90 has been fitted to the mini-WASP array :)
I will now be able to get 12-hours of data at f#4.5 in a typical 4-hour imaging session.

Provided that I get 4-hours of clear Moonless skies of course.  Certainly won’t be tonight.

 

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There are 5 very nice Carbon stars in Andromeda that I would like to bag this month and this is the first I’ve caught – UY Andromedae with some nice faint fuzzies, and a couple of not so faint fuzzies.  Nice area of Andromeda, worth visiting with a decent telescope for a browse around.

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The mini-WASP array was again put into commission taking half hour subs of the Navi region of Cassiopeia – Navi is the central star in this image.  Nearby lies Gamma Cassiopeiae and its associated nebulosity.

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Several hour’s worth of half hour subs resulted in this deep view of the PacMan nebula and nearby bright star Schedar in Cassiopeia courtesy of the mini-WASP array.

The array is due for an upgrade at the end of this week with the addition of a 3rd Sky 90 refractor :)

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I recently discovered that Takahashi have discontinued making the Sky 90 – mad decision IMO.  And this comes at a time when I was looking to replace the TS80 with a Sky 90 giving me a mini-WASP array with 3 x Sky 90 refractors and a 200mm lens – all with M26C OSC CCD cameras.  By sheer coincidence an astronomer colleague found himself with a mint Sky 90 (collimatable version!!) for sale.  Needless to say I have bought this together with the camera angle adjuster and the f#4.5 reducer corrector.

So the new mini-WASP configuration will be 3 x Sky 90 refractors and a Canon 200mm lens for imaging, and a Megrez 80mm guide scope.

I have this terrible niggle to put a 4th Sky 90 in the frame and use off axis guiding on one of the Sky 9os, but I know that I will become severely cheesed off with the limitations that this sort of guiding will bring.  So at all costs I must resist!!

The new Sky 90 has come along just in time for the longer nights and all the Winter goodies – now all we need are the clear Moonless skies – something that was totally missing last Winter :(

 

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Put the 5D MkII on the back of a TS80 refractor together with a 5X Barlow (not really called a Barlow then, but the name sticks).

Took 17 subs at 1/200th second and ISO800 which I stacked in Maxim.  This is the result.

See in higher resolution here https://flic.kr/p/oSq5uA

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Managed to capture a few 5-minute subs of comet Jacques when it was close to Epsilon Cassiopeiae on the evening of 22nd August 2014.

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Second upgrade for the week that required the earlier upgrade to go ahead :)

This time the in-storage Sky 90 and filter-wheel have gone back on.  It was taken off over a year ago as I got terrible star shapes with the M26C camera and I put this down to collimation being way out.  Realised later that it was the camera flatness that was way out, but I left the (flattened) camera on the TS80 and worked with that.  Checked the Sky 90 collimation while it was off the array and it looked alright to me.  So now need to see if it is indeed alright next imaging session.  Problem is, the computer that drives this imager decided at this very instant to pop its clogs – there’s always something!!!

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A small upgrade was made to the mini-WASP array this week – can you spot it??

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