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About PhotoGav

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  1. Imaging with a 10" Refractor

    Thank you @Astroscot2 - I think I have heard talk of the Paisley 10" from our Observatory Director, so would imagine that they are definitely related! There aren't very many Cooke 10" scopes still operational in the world these days - I think only a handful. I will take some pics next time and post them up.
  2. Imaging with a 10" Refractor

    Thanks Olly, it really is something quite special using an instrument with such a history. It was installed at Oxford University's Radcliffe Observatory in the early 1900's and was one of the best scopes in the country and beyond at the time. It's current claim to fame is that it is the oldest telescope with computer go-to, in the world!! That's a very good idea regarding the use of a filter, I will give that a try.
  3. Imaging with a 10" Refractor

    I used a Point Grey Chameleon3 mono camera. I attached it with difficulty! Strangely the scope wasn’t designed with imaging in mind! It has a 2” push fit hole at the end of the focuser. The focuser itself is diabolicaly stiff, so yesterday I was trying out a Baader SCT focuser with a 2” push fit nosepiece, inserted into the scope’s focuser. I eventually got it to reach focus, but more adapters needed as my friend was holding the Baader focuser in place as the screw to hold it didn’t quite marry up with the nosepiece. It was quite a sight - my friend up a ladder complaining that the blood flow to his hands was dwindling!! I’ll take some pics of the scope in action next time I’m up there.
  4. I have the chance to play around with a fantastic old telescope at my local observatory. It is a Thomas Cooke 10" refractor, made in 1860. I feel as though I should be wearing top hat and tails and smoking a pipe while using it, but have thus far resisted. Anyway, it's an absolute pig to use, but just a magnificent thing. I tried imaging the Moon with it this evening. Far from the best results possible, but a start. I hope to have many more sessions with it and get some better images. First off, Mare Crisium: And then the crater Petravius (lower right) and its surrounding area:
  5. Another shot from tonight's session with the 1860 Thomas Cooke 10" refractor and Chameleon3 camera. This time of the crater Petavius (the biggest crater on the far right of the image) and its surrounding friends. One point for each crater you can name!
  6. Here is a close up of Mare Crisium. Taken with a 10" Thomas Cooke refractor, made in 1860, and a Chameleon3 camera, made in 2017!
  7. Thank you Alan, that is all very helpful information. I will check whether I can get my finger in it or not...!
  8. Here are some pics of the diagonal - all identifications greatly received! There is nothing on the item itself to tell me what it is and I'm not well versed in diagonals!
  9. Sol in Ha - 2018-04-18

    John, thank you for your interesting and bank balance saving advice about the double stack!!!
  10. Sol in Ha - 2018-04-18

    Thank you all for the positive feedback - I had almost forgotten how everything fits together and works! It was just great to be out in the sunny garden with my head under a blanket, fiddling with the pc! I do wonder... how much better would a double stack make the resulting images? Is it worth the significant price tag? Steve’s razor sharp images would suggest it would be worth the investment - or is it the extra 10mm of aperture he has? Or probably both!?!
  11. Sol in Ha - 2018-04-18

    At last - some Sun! Usual kit - Lunt LS50THa, Chameleon 3 and 2.5x Powermate for the close up, all on a Star Adventurer mount.
  12. Mandel-Wilson 2 The Angel Nebula

    That is exquisite Barry, a real triumph. I love all the little galaxies splattered about too!
  13. OK, that’s great. I will hopefully be in the Observatory this Sunday evening, so will check what the diagonal is. We can then discuss a price. Thanks.
  14. Proms 18-4-18

    Lovely pics Charl. Worth checking that upper right off going limb area again now, there’s a large loop that appears to be lifting away.... I’m busy grabbing data in my garden right now!!!