Search found 1421 matches

by rwilkinson
Fri Sep 18, 2020 8:02 am
Forum: Astronomical events
Topic: Comet 2019 U6 (Lemmon)
Replies: 3
Views: 1235

Re: Comet 2019 U6 (Lemmon)

This comet has faded down to 12th magnitude now, although it's higher in the Western sky than last month.
Last night I caught it between the wispy clouds, before it disappeared behind a neighbouring roof.
c2019u6_17sep.png
Comet Lemmon on 17-Sep. 17x 90-sec with Mx716 on C8 at f/3.5.
c2019u6_17sep.png (142.73 KiB) Viewed 206 times
by rwilkinson
Mon Sep 14, 2020 2:51 pm
Forum: Astronomical events
Topic: A difficult-to-spot comet: C/2020 Q1 (Borisov)
Replies: 0
Views: 297

A difficult-to-spot comet: C/2020 Q1 (Borisov)

In contrast to Comet NEOWISE which some of us managed to glimpse with the unaided eye over the summer, this one is about 10 magnitudes (10,000 times) fainter! It's the 10th comet discovered by famous comet-hunter Gennady Borisov from his observatory in the Crimea - he found this one just last month....
by rwilkinson
Thu Aug 13, 2020 9:46 am
Forum: Astronomical events
Topic: Comet 2019 U6 (Lemmon)
Replies: 3
Views: 1235

Re: Comet 2019 U6 (Lemmon)

This morning I got a better picture using the iTelescope T68 in New Mexico:
lemmon_12aug.jpg
Comet Lemmon on 12-Aug. 4x 120-sec with Celestron 11" Rowe-Ackermann Schmidt Astrograph at f/2.3
lemmon_12aug.jpg (216.58 KiB) Viewed 1060 times
by rwilkinson
Wed Aug 12, 2020 11:08 am
Forum: Astronomical events
Topic: C/2020 F3 (NEOWISE) - an exceptional comet!
Replies: 3
Views: 2056

Re: C/2020 F3 (NEOWISE) - an exceptional comet!

It's well past its peak now - down to 7th magnitude, but no longer visible from my garden (too low in the West). However I did finally manage to capture it with an iTelescope in New Mexico - the 11" Celestron Rowe-Ackerman: neowise_11aug.jpg The ion tail is still just visible (pointing out to the le...
by rwilkinson
Mon Aug 10, 2020 1:24 pm
Forum: Astronomical events
Topic: Comet 2019 U6 (Lemmon)
Replies: 3
Views: 1235

Re: Comet 2019 U6 (Lemmon)

I did manage to catch this comet last night - but only just! It took me two attempts (including carrying the tripod fully-rigged with 'scope and counter-weight!) to set up in a position where the comet was above the roof-line - and even then I only had ten minutes before it "set" behind a chimney! I...
by rwilkinson
Tue Jul 28, 2020 11:04 am
Forum: Astronomical events
Topic: Comet 2019 U6 (Lemmon)
Replies: 3
Views: 1235

Comet 2019 U6 (Lemmon)

Whilst waiting for another opportunity to observe Comet NEOWISE from Bolton, I've bagged another "new" comet using an iTelescope in New Mexico:
lemmon_27jul.jpg
Comet Lemmon on 27-Jul. 5x 180-sec with 250mm f/3.4
lemmon_27jul.jpg (69.12 KiB) Viewed 1235 times
I might be able to get it from Bolton too over the next few weeks: it's low in the West, heading towards Arcturus.
by rwilkinson
Tue Jul 21, 2020 4:20 pm
Forum: Astronomical events
Topic: C/2020 F3 (NEOWISE) - an exceptional comet!
Replies: 3
Views: 2056

Re: C/2020 F3 (NEOWISE) - an exceptional comet!

Last night I had another go, this time with the 'scope on my EQ5 mount - after I found a site for the tripod where I could see it "underneath" next door's telephone line (although I had to take our washing-line down!): c2020f3_20jul.jpg By 11:30 the sky had darkened enough for me to use 30-sec expos...
by rwilkinson
Mon Jul 20, 2020 1:33 pm
Forum: Astronomical events
Topic: C/2020 F3 (NEOWISE) - an exceptional comet!
Replies: 3
Views: 2056

Re: C/2020 F3 (NEOWISE) - an exceptional comet!

Now here's my processed data-set from last night (as the 'scope was operating on a motorised alt-az mount, I first had to do a stellar registration to take out the field-rotation, before stacking on the comet.): c2020f3_19jul.jpg The straight (blue) ion-tail is just about visible, as well as the mor...
by rwilkinson
Mon Jul 20, 2020 7:56 am
Forum: Astronomical events
Topic: C/2020 F3 (NEOWISE) - an exceptional comet!
Replies: 3
Views: 2056

C/2020 F3 (NEOWISE) - an exceptional comet!

At last - a bright comet with a proper tail! I got my first view of it last night, low in the twilight in the North. I went out with my binoculars around 10:30 and had a look at Jupiter and Saturn low in the South, but to the North the sky was still very bright. However by 11pm it was dark enough to...
by rwilkinson
Sun Jul 05, 2020 9:49 am
Forum: Physics, Space Science and Theories
Topic: Apollo 13 on BBC World Service
Replies: 5
Views: 5325

Re: Apollo 13 on BBC World Service

Now the team have produced a one-hour condensed version for Radio4's "Archive on 4":
https://www.bbc.co.uk/programmes/m000kmw5