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Peter Drew
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Everything posted by Peter Drew
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17.07.2021 Another warm day with poor seing conditions:
Peter Drew replied to Rusted's topic in Imaging - Solar
Very warm here today as well, seeing was quite good by 6pm with very similar visual images to your photos, which despite your self criticism, most people would be happy with. đ -
I've been sharpening drill bits freehand for over 60 years, one of the things you were taught during an engineering apprenticeship, remember those? đ
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JULY 13TH - NICE PROM AND DISC DETAIL ON E LIMB 12.20 PM
Peter Drew replied to paulastro's topic in Observing - Solar
I had a short session at 5pm today. Good variety of phenomena on show as sketched by Paul, nice chunky filament which would make a great prom at the limb. Very good seeing on occasions. đ -
You were lucky, poured with rain all day here. âšī¸
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JUNE 26 NOW TWO PROMS LEAVING LIMB 5.25PM
Peter Drew replied to paulastro's topic in Celestial Events Heads Up
I also saw these at 17.10 this afternoon, magnificent sight at 150x. Large fainter prom on the other limb looking like a dinosaur skeleton, lots of delicate detail surrounding the active areas containing the sunspots. đ -
Small surge with the new plage areas.
Peter Drew replied to Nigella Bryant's topic in Imaging - Solar
I managed to catch this at 5.50pm today, it had produced a significant extension at the time. Ten minutes later the cloud covered it for good. âšī¸ -
Deep dive into addressing stiction in Synta 5 and 6 mounts
Peter Drew replied to Applal's topic in Discussions - Mounts
You need a tube of "engineers blue". Lightly smear some on to one of the mating surfaces and turn the other against it, the blue will transfer on to and reveal the high spots. Be careful doing this to avoid the surfaces binding. I think the amount of material to be removed will be less than can be achieved by re-machining, scraping as used to fit plain bearings is probably the best way forward, just removing the blue high spots. đ -
Dalmellington Observatory - hellish news
Peter Drew replied to wackyscot's topic in The Astro Lounge
Words fail me. Buildings and equipment are replaceable but the time, effort and devotion of those who made the original possible can never be.. I'm as gutted as the remains. âšī¸ -
Collimation way off
Peter Drew replied to Ben2121's topic in Getting Started Equipment Help and Advice
It's my belief that manufacturers tighten the mirror clips to prevent the mirror from flopping about during transit from China to wherever. One of the first things to check on the receipt of a new Newtonian. đ -
I managed a few minutes at 6pm. Quite good seeing and unusual to see two parallel filaments. They looked wider spaced than this excellent image but I was using a much higher magnification. đ
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Vintage Vixen SP102M F10 achromat purchase
Peter Drew replied to F15Rules's topic in Discussions - Scopes / Whole setups
Vixen enthusiasts might like to know that when the 102m achromats first appeared, should you have the misfortune to break your objective, a replacement including the adjustable cell was ÂŖ445. đ -
A bit late to this, I was about to give Spile's post a +1 and recommend that you didn't, at this stage, try and adjust the height of the secondary as this would likely lead to complications. Never mind, providing you don't break or lose any of the bits, all can be put right. đ
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Axes too stiff to balance?
Peter Drew replied to StuartT's topic in Getting Started Equipment Help and Advice
You can check the amount of power drawn with a meter, if reasonably similar in both directions the balance is good enough. đ -
Heavy rig one handed setup. Oh joy
Peter Drew replied to Bigwings's topic in Discussions - Scopes / Whole setups
Sons can be a good long term investment. We have one that sorts out all our IT problems. đ -
Do you need any concrete at all?. A stout metal pipe with three legs and three wheels could be all you need. An EQ6 doesn't suggest a particularly heavy telescope and "rolling around on a patio" doesn't suggest astrophotography. đ
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I think the blue filter is an ITF not the blocking filter. If only blocking filters were that cheap! đ
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I have 17", 20" and 30" Dobsonians on wheels so don't see why not a pier. The wheels need to be a decent size and of course able to take the weight. You will also need some form of adjustable stabilisers. đ
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New AR rotating into view - 13th June 2021
Peter Drew replied to Stu's topic in Celestial Events Heads Up
I spotted it in Ha on Saturday afternoon, lots of activity in the area at the time, should be a good one. No opportunity to view since. đ