Search found 5371 matches

by David Frydman
Sat Mar 06, 2021 3:25 pm
Forum: Observing
Topic: Newbie
Replies: 5
Views: 45

Re: Newbie

Hi Ash and welcome. On YouTube I looked up aurora cameras and there are many live view. There have been several bright displays the last few evenings from Utsjoki, Nuorgam and Rovaniemi. They show stars as faint as a dark sky view. There are videos of planets etc. also. Some are very good. I haven't...
by David Frydman
Thu Mar 04, 2021 10:22 pm
Forum: Observing
Topic: March a good month for aurorae watching
Replies: 10
Views: 97

Re: March a good month for aurorae watching

There was a very bright display from the Utsjoki camera this evening, I think in live view and real time. Latitude 70 north. I went there once for a coffee on a 15 day $90 Finnnair unlimited flights special deal. If one looks up aurora cameras on Youtube there are many and some have clear skies. The...
by David Frydman
Thu Mar 04, 2021 3:49 pm
Forum: Observing
Topic: March a good month for aurorae watching
Replies: 10
Views: 97

Re: March a good month for aurorae watching

There was an extensive fairly quiet mainly green aurora in Live view from Sodankyla last night 2021 March 3/4. On YouTube. I visited Sodankyla observatory in the 1960s and talked with the director who spoke archaic English that he learned from old scientific books. There was no visual telescope but ...
by David Frydman
Wed Mar 03, 2021 5:48 pm
Forum: Telescopes and instruments
Topic: Brexit duty on astro-imports ..
Replies: 9
Views: 815

Re: Brexit duty on astro-imports ..

Trying to find details from a New York dealer, they say that I am not a human.

They may well be right.

I didn't try to prove that I am a human.

Perhaps a philosophical question.

Regards,
David
by David Frydman
Fri Jan 29, 2021 11:09 pm
Forum: Visual Satellite Observing
Topic: The UFO files
Replies: 8
Views: 448

Re: The UFO files

Ariel gives the UFOs beautifully laundered freshness and fine smelling aliens.

Regards,
David
by David Frydman
Fri Jan 29, 2021 6:56 pm
Forum: Observing
Topic: Looking for VESTA
Replies: 32
Views: 784

Re: Looking for VESTA

Their eyes. The normal young Aboriginal Australian acuity range is 6/3 to 6/2 with a best of 6/1.4 using both eyes as measured by an Australian professor. However, nowadays when older they have many eye problems caused by poor conditions, poor health, poor health facilities, lifestyle etc. It was on...
by David Frydman
Fri Jan 29, 2021 6:38 pm
Forum: Telescopes and instruments
Topic: Which binoculars?
Replies: 9
Views: 189

Re: Which binoculars?

My pupils still reach over 5.5mm and I got my very old person Covid jab a few days ago. So one should measure ones pupils. One can try different binoculars depending on local light pollution etc. Exit pupil is only part of the story. I use 12x56, 12x50, 12x45, 10x50, 8.5x44 (I get full use of the 5....
by David Frydman
Fri Jan 29, 2021 5:30 pm
Forum: General chat
Topic: Making a Monocular from a Binocular
Replies: 9
Views: 283

Re: Making a Monocular from a Binocular

I have two German army monoculars that came from a damaged binocular. Hensoldt Wetzlar 8x30s. I prefer the right sided one, but it has the reticule, which is a nuisance at night as the lines can obscure stars etc. IF binoculars have dioptres on both sides. The Soviet 8x30 binoculars have eyepieces t...
by David Frydman
Fri Jan 29, 2021 5:06 pm
Forum: Observing
Topic: Looking for VESTA
Replies: 32
Views: 784

Re: Looking for VESTA

I have seen Uranus numerous times with unaided eyes. It was rather easy. I have asked for reports of an unaided eyes sighting of Neptune, but no success yet. I think at the best high elevation sites it could be seen at magnitude 7.8 by someone with exceptional sight. But it has an unusual spectrum. ...
by David Frydman
Sat Jan 02, 2021 4:29 pm
Forum: Observing
Topic: Sun Dogs & Spectral Arc
Replies: 10
Views: 251

Re: Sun Dogs & Spectral Arc

I saw an all sky halo display in Finland about 1980. It was the most beautiful sight I have ever seen observing the sky. There were numerous and some very rare forms. Complete horizontal arc. Forms opposite the Sun. There were two suns, one false. There was probably a third hidden behind a building ...
by David Frydman
Sat Jan 02, 2021 4:14 pm
Forum: Observing
Topic: Attempt at HU Tauri Occultation 27 Dec 2020
Replies: 11
Views: 266

Re: Attempt at HU Tauri Occultation 27 Dec 2020

My old 123mm f/5 refractor goes from 16x with an old Kodak 38mm Eyepiece. 4.7 degree field. The drawtube is 3 inches diameter. The telescope has no finder as it doesn't need one. There are modern 3 inch eyepieces, maybe also bigger. The Yerkes refractor drawtube may be 5 inch diameter. The 123mm ref...
by David Frydman
Sat Dec 19, 2020 9:31 pm
Forum: General chat
Topic: Meet Simon Ploessl
Replies: 4
Views: 208

Re: Meet Simon Ploessl

Although Plossls are now plentiful and have been used in military optics regularly, they were not so common in the 1950s and 1960s as astro eyepieces. Orthoscopics and Kelners were the normal better eyepieces available. I still use the orthos and Kelners more than Plossls. As well as Erfles, which w...
by David Frydman
Fri Oct 02, 2020 2:21 pm
Forum: Gallery
Topic: Mars 01 Oct 2020 Eyepiece Sketch
Replies: 6
Views: 496

Re: Mars 01 Oct 2020 Eyepiece Sketch

Wow.

Regards,
David
by David Frydman
Sun Sep 27, 2020 4:28 pm
Forum: Observing
Topic: observing from bed
Replies: 33
Views: 1523

Re: observing from bed

George Alcock's large binocular was a Schneider 25x105 with 45 degree inclined eyepieces. These had triplet, probably uncoated, objectives. Unfortunately when these objectives were distributed to the U.K. the components got separated. They were bought by different dealers. Some bright spark commerci...
by David Frydman
Fri Sep 25, 2020 2:37 pm
Forum: Observing
Topic: observing from bed
Replies: 33
Views: 1523

Re: observing from bed

The view of Mars through Horace Dall's closed attic window using his world class 8 inch Maksutov at 400x was unbelievable. It was the equal of my 12.5inch Dall Kirkham in my garden. His camera obscura from indoors provided daytime views that were just spectacular. His photos of a church gutter at 17...