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Pete Presland

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Posts posted by Pete Presland

  1. Good looking disc there, a filter wheel is very useful when imaging Venus. Saves a lot of messing around when switching from UV to IR filters. 

    I have tried the dyadic setting before on Jupiter, but always found the end result a little "blotchy" (not sure that is the correct description)

    Could be interesting to try it on my data from the 17th which i thought was quite good.

    • Like 1
  2. Venus from Monday 17thApril in very good conditions. Captured at just after 6pm in daylight, using the shed and a garden chair to block the sun 🙂 

    Captured with C9.25, ASI290mm, x1.8 Barlow, Baader UV Venus filter. best 20% of 25000 frames captured. Stacked in A/S3 and lightly processed in IMppg and enlarged in CS2.

    Also did a quick  run with the 807 filter which i will post shortly.

    2023_04_1718.11Imppgcs2.png.ff1f41c471bb9fc1703d8a6d54bb8985.png

    • Like 17
  3. 3 hours ago, Ags said:

    What are the dimensions? What sort of wood did you use? Is the floor a solid slab (how thick?)or is the pier separate? 

    The dimension is 1.8m x 1.8m square, height is 5ft to the top of the sides. I choose this size simply because of cost, i could source feather edge timber to clad it which was 3.6 metres long, so it was simply cut in half.  I would like a bigger size to be honest, it is a bit small.

    The frame is just softwood, the cladding as mentioned above is feather edge board.

    The floor is a concrete base around 3-4 inches thick, but on a layer of hardcore rubble.

    The pier is separate and bolted into the concrete.

    It was and still is bit of a game changer due to the quickness of setting up and closing down at night. That said the location has got worse over the 12 years, due to tree growth, light pollution and the altitude of the planets in recent years.

    • Like 2
  4. The observatory now looks a little cluttered and small with 13 years of buying and selling. I have added a few layers of old rubber backed matts that have come from the house. I also lined the inside walls with (free) MDF panels, the roof was also lined with plywood and felt to stop condensation. This has unfortunately made the roof a little to heavy. The frame that roof slides on will need replacing within the next couple of years i think.

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    • Like 10
  5. Those of you who were around here in 2010, might remember the £250 obsy build thread (or probably not 🙂 )

    But as i was recently asked for some info regarding it @Ags , i thought it might be nice to revisit and add a couple of up to date images.

    The build was a simple frame on a concrete base with a roll on roll off roof, i am no carpenter but i found with some planning it was relatively straight forward.

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    • Like 2
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