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Everything posted by Physopto
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
Damn! Bustedπ₯π₯π₯π- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
So look at the moon then. I know how you really love it. up now but hopefully clear at Galloway.- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
Phew !- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
Hey David better watch out for Ian π Being serious though good idea of yours as Mike said about 19 registered with Lesley and David said 17 were through his Astro friends. I booked with Lesley nearly 9/10 months ago and Mike well before that.- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
When are you and Dawn getting there?- 306 replies
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Yup got one of those for at star camp to protect cables. Ended up tripping over it countless times in the dark π Heavy to carry about but does protect cables. Derek
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
Me too 2- 306 replies
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I bought some like these just because they are flat and take up less space in a confined area. But I suspect they would not last long if walked on. Very soft and flexible but not hardy. https://www.amazon.co.uk/Multi-Cable-Ethernet-Network-Patch/dp/B01FXSO6RG/ref=sr_1_19?hvadid=80058222453776&hvbmt=be&hvdev=c&hvqmt=e&keywords=flat+network+cable&qid=1571232565&sr=8-19
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How do I check my backfocus is tuned?
Physopto replied to Viktiste's topic in Getting Started With Imaging
Don't forget the thickness of the filters will change the back focus. It depends upon the filter thickness and refractive index of the glass used. Most filters have a refractive index about the same. Some manufacturers filters are 1mm thick and others can be 3mm thick. So the effective light path length is changed in a system depending whose filters you use. As the refractive index of a filter can be around 1.45 the thickness of the filter affects the speed of the light and OPL is changed. So OPL for the filter is dn where d is the glass thickness and n the refractive index. A 3mm thick filter can change the optical path length by up to 1mm where as 1mm filter it is only about 0.3mm. -
Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
Well time is relative ya know. π€- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
Well boy-os, less tha 2weeks to go. It will be good fun to meet up with everyone again. Pie addicts as well I suppose.π€ So we can expect P.E.A. to reign supreme and have to arrange a circle of chairs and listen to all that drivel about their childhood problems, being force fed pies by their parents I expect! Ah, well, if we can't help those afflicted poor souls........ π€£ Never mind the rest of us can blot it all out with a dram or several. π₯π₯π₯π₯ I think Mike was feeling sorry for the addicts and may bring a placebo pie or two. (Maybe stop the uncontrolled screaming during their withdrawal ). Oh the fun we will have. π- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
I can see many, many hours of fun on the way. π±- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
For you, no !'j#{* chance. π€π- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
If I cooked a cake it would be the cause of my suspension failure. As Mike knows I have been working on a new control system for my gear as no caravan now. Just hope it all works as expected on the day, does not leak etc, oh π meant night of course! π€- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
Looks like I may need to geta Deed Poll Certificate again! π- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
Thanks Damian, I'm bringing some emergency supplies π₯π₯π₯π₯π₯. Oh, and a green scrubby pad π€- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
It will be my first for several years. Can't wait to wind up a few souls!! π- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
Mmmmmmmm, methinks 365 a year for 40 + years! ADDICTION.... for sure. Seek help and quickly,,,, or there will be none left for anyone elseπ‘π‘π‘- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
Breaking News ! The South Shields Astronomical Gazette has reported that Damian (Mapstar) has just joined P.E.A. ( Pie Eaters Anonymous). Apparently during his interview he stated "his problems with pies, started in childhood" He has fought the addiction for many years but he realised after perfecting his "22" pie measuring device", that he had to do something drastic to end the belly stretching problem. I am sure we all wish him all the best with fighting his addiction. Now Ian,,, What yer gonna do without yer competitive pal. π€£- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
π€. Can't refute a FACT !!!! π- 306 replies
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
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Galloway Autumn Star Canp 2019
Physopto replied to Demon Barber's topic in Star Parties & Astro Events
Good God!!! Looking back through all the posts, been too busy to keep up of late, I have just realised I am classed as a "brown dwarf", I know I am short ish but ........π± Looking forwards to seeing everyone.- 306 replies
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