Search found 1305 matches

by rwilkinson
Sat Mar 09, 2019 8:28 pm
Forum: Physics, Space Science and Theories
Topic: Ultima Thule flyby - 1st January
Replies: 5
Views: 2853

Re: Ultima Thule flyby - 1st January

The New Horizons team have just published a pair of stereoscopic high-resolution images as a 3D pair:
http://pluto.jhuapl.edu/News-Center/New ... e=20190307
I found that I got the best effect from the "cross-eyed" pair.
by rwilkinson
Fri Mar 08, 2019 12:13 pm
Forum: Astronomical events
Topic: Comet 46P/Wirtanen
Replies: 9
Views: 5578

Re: Comet 46P/Wirtanen

This comet has declined from 3rd down to 11th magnitude in the last couple of months, but it's high in the sky in Ursa Major at the moment, so I could easily detect it with my faithful old Mx716 camera. 46p_7mar.jpg I also had a look for 123P/West-Hartley , which I'd expected to be fainter (12th or ...
by rwilkinson
Thu Feb 28, 2019 4:25 pm
Forum: Astronomical events
Topic: Comet 2018 Y1 (Iwamoto)
Replies: 7
Views: 3679

Re: Comet 2018 Y1 (Iwamoto)

I got some more data last night, this time using one of my Sony cameras on the StarWave 80mm refractor:
composite.jpg
Comet Iwamoto on 27-Feb, with M36 & M38. 56x 120-sec with Sony NEX5R on 80ED at f/5
composite.jpg (185.51 KiB) Viewed 3379 times
I could have done a better job of framing it, but I'm not used to this wide-field camera yet!
by rwilkinson
Thu Feb 28, 2019 8:02 am
Forum: Astronomical events
Topic: Comet 2018 Y1 (Iwamoto)
Replies: 7
Views: 3679

Re: Comet 2018 Y1 (Iwamoto)

rwilkinson wrote:
Wed Feb 27, 2019 4:48 pm
This gave a wide enough field of view to take in the three Open Clusters M36, M37 & M38 as well as the comet.
This is the full frame.
clusters.jpg
Comet Iwamoto and three Open Clusters. Sony NEX 5 with Pentax 135mm lens: 61x 170-sec at f/5.5.
clusters.jpg (209.78 KiB) Viewed 3393 times
by rwilkinson
Wed Feb 27, 2019 4:48 pm
Forum: Astronomical events
Topic: Comet 2018 Y1 (Iwamoto)
Replies: 7
Views: 3679

Re: Comet 2018 Y1 (Iwamoto)

Last night I had two independent imaging systems running side-by-side in my garden. The first was my Sony NEX 5 camera fitted with a Pentax 135mm lens, running on my EQ tracking platform. This gave a wide enough field of view to take in the three Open Clusters M36, M37 & M38 as well as the comet. So...
by rwilkinson
Wed Feb 27, 2019 8:09 am
Forum: Equipment - Help
Topic: 2 star alignmemt trouble
Replies: 2
Views: 2918

Re: 2 star alignmemt trouble

According to this thread on the CloudyNights forum you can ignore the message: https://www.cloudynights.com/topic/491688-synscan-firmware-336-question/?p=7352587 It sounds like it's something which may pop up when your latest alignment is done with a different method from the previous one. The messa...
by rwilkinson
Mon Feb 25, 2019 8:46 am
Forum: Physics, Space Science and Theories
Topic: Ultima Thule flyby - 1st January
Replies: 5
Views: 2853

Re: Ultima Thule flyby - 1st January

The high-resolution images of the flyby have now been recovered and processed, and they got one with the target right in the frame, from a range of just over 4000 miles - whilst zipping past at 32,000 miles per hour!
http://pluto.jhuapl.edu/News-Center/New ... e=20190222
by rwilkinson
Fri Feb 22, 2019 1:38 pm
Forum: Astronomical events
Topic: Comet 2018 Y1 (Iwamoto)
Replies: 7
Views: 3679

Re: Comet 2018 Y1 (Iwamoto)

I got another picture last night, although the comet has past its peak and is now down to 7th magnitude. There was hazy cloud earlier in the evening, but this had mostly cleared by 8:30pm. So when I was setting up, the comet had passed to the West of the Meridian. This was my first test of a "flippe...
by rwilkinson
Fri Feb 15, 2019 4:27 pm
Forum: Astronomical events
Topic: Comet 2018 Y1 (Iwamoto)
Replies: 7
Views: 3679

Re: Comet 2018 Y1 (Iwamoto)

I had another go last night - this time using a telescope! I'd fitted a focal-reducer to my 80mm doublet to give it a wide enough field to keep the comet in view for a couple of hours. But the sky was really hazy and full of aircraft contrails, and with the bright moonlight too I could hardly make o...
by rwilkinson
Fri Feb 15, 2019 7:53 am
Forum: Astrophotography
Topic: Too Many Aeroplanes
Replies: 1
Views: 2224

Re: Too Many Aeroplanes

It's not just the navigation lights - last night there were loads of contrails painting stripes across the sky, and then taking ages to disperse. They looked quite eye-catching in the moonlight, but were bad news for those trying to detect faint objects beyond Earth's atmosphere. :( In particular, I...