Search found 691 matches
Nice view of this odd little group Cliff. I finally got the telescope out into the drive this morning at 1030 UT and saw the spot group by projection with a 60mm aperture at f15 and, another little group had emerged in the Sun's northern hemisphere comprising a pair of small spots and an exceedingly...
- Fri Jan 15, 2021 12:36 pm
- Forum: Observing
- Topic: The Moon through binoculars
- Replies: 20
- Views: 403
Thanks Mike, on the basis of your comments it seems worth looking into. I’ve ordered one of these 6x30s today from an interesting bird watching set up in Norfolk called Clayspy, £22.98 with postage. Yes, I’m a bit skeptical of the claimed 10.5 degree fov, but anything approaching that will be intere...
- Sat Jan 02, 2021 4:32 pm
- Forum: General chat
- Topic: Arecibo Telescope to close.
- Replies: 13
- Views: 395
That sounds like a great idea John. I’d kick in £50; if you can cannibalise a decent microwave oven and adapt it with your engineering skills we could upgrade the Lovell. Actually it does sounds like a good idea. I wonder what it would cost, but importantly would the old girl stand the extra weight?...
The only heat problems that I have had with apertures between 80 and 100mm have been the plastics comprising field stops melting in eyepiece barrels. It hasn't happened yet with the 60mm aperture and my 15mm plossl (which has quite a wide field stop). Bob
First, Brian makes a good point, but 60mm is small enough to avoid heating probs with the mass of glass in a "cheap" 1.25 15mm plossl (Celestron Omni). I am in Leeds. I project sideways via a 90 degree mirror diagonal onto a card screen shielded in a cardboard hand-held box so I can vary t...
Hello Skybrowser, with 60mm at F15, 15mm plossl eyepiece with a diagonal by projection I counted 5 spots in 2 groups: group 1, single large spot closest to limb; group 2, 4 spots in two clusters of 2 spots each. Conditions: slightly unsteady seeing with reasonably good transparency. Bob PS whereabou...
- Mon Dec 28, 2020 3:12 pm
- Forum: Observing
- Topic: Attempt at HU Tauri Occultation 27 Dec 2020
- Replies: 11
- Views: 266
Jeff, love the Moon image, it's so atmospheric (literally!). Am v interested how you get on with the refractor - so much more convenient than the dob, no doubt. I really look forward to more of your observations with the refractor. Best wishes Bob