- This topic has 19 replies, 11 voices, and was last updated 4 years, 2 months ago by
David Arditti.
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8 June 2020 at 7:52 am #574641
John Chuter
ParticipantA real Challenge for this month. Many thanks to David Arditti and Tim Haymes for the work done on this.
https://britastro.org/node/22532
Let’s hope we can see some interesting posts later in the month.
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8 June 2020 at 5:12 pm #582626Dawson
ParticipantThis is going to be a tricky one. We’d planned to try and observe the occultations of Venus, but I was undecided what filters to use, and I need to make a longer sun-shield.
James
9 June 2020 at 10:58 am #582628Tim Haymes
ParticipantApologies that this event is not listed on the BAA Handbook Lunar Occ page, it should have been. A prediction setting that i used was incorrect. (Fixed now!). The omission was only noticed after publication.
I will be using an IR pass filter for imaging. For my mobile goto telescope it should be possible to set up the alignment with stars before sunrise. I might do that and keep the rig running. Early acquisition of Venus would be a bonus.
9 June 2020 at 12:49 pm #582629Daryl Dobbs
ParticipantI’ve got a Skywatcher 90mm refractor I use for white light observation of the Sun with a Seymour solar filter or a Lacerta Herschel wedge, I do tend to use the Herschel wedge more than the Seymour filter. It’s mounted on a EQ5 with a Synscan upgrade so I’ll use that to align it with the pole and get it to find Venus without the Sun getting in the way. Clear-ish this morning so I hope the clouds stay away next week.
The position Venus will be in did pose a problem when I did a dry run this morning, the EQ5 upgrade wasn’t carried out by me, it was there when I bought the mount. The RA axis has a black plastic block as part of the upgrade which at certain positions hit’s another block on the Dec axis. You can guess what happened so I had to do a meridian flip to avoid the blocks, I think further preparation is required.
9 June 2020 at 7:31 pm #582632Peter Goodhew FRAS
ParticipantI will try and attempt this, weather permitting of course. Will experiment on the moon beforehand to see how well it comes out with different filters.
10 June 2020 at 9:41 am #582633Daryl Dobbs
ParticipantExcellent idea Peter, I hope you share the results of your filter experiments with us as I’m interested to know what different types of filter make during daylight too.
11 June 2020 at 12:07 pm #582635Peter Goodhew FRAS
ParticipantYes of course I will. I have used Ha filters on the moon in daylight, but as David Arditti suggests a red filter might also be an option. If I get organised I will try different flters on both the moon and venus separately before they get to conjunction, and then capture the conjunction with whatever seems to work best.
16 June 2020 at 9:09 am #582644Peter Goodhew FRAS
ParticipantI did some test imaging this morning of both the moon and venus. Both red and Ha filters worked fine, although I felt that the Ha was more successful – don’t ask me why! The key thing is that the moon requires one tenth of the shutter speed of that venus needs. So the choice is an over-exposed venus or very faint moon. In my case the moon was best at around 0.3s with the Ha filter, and Venus at 0.03s. I’m tempted to try with both exposures on Friday, and then combine the images.
19 June 2020 at 10:01 am #582655Andrew Robertson
ParticipantClouded out for re-appearance. Meant to say despite 50 years of observing….think that was a Freudian slip to disguise my age 🙂
Andrew
19 June 2020 at 10:25 am #582653Andrew Robertson
ParticipantSaw it visually in the 9×50 finder. Absolutely fantastic, crystal clear blue skies. A very large, very thin, very faint ghostly crescent moon with a tiny but very bright ‘c’ of a crescent Venus next to it. I watched the crescent of Venus get smaller and smaller until it pinged out of existence behind the moon. Despite 40 years of observing, sights like this never fail to grab me.
Andrew
19 June 2020 at 10:32 am #582656Peter Goodhew FRAS
ParticipantClouds prevented me from capturing this from London, but there were clear skies in Spain so I managed to capture it from there at 09:18 CET this morning. The image was produced using a short exposure (1/100th second) and a red filter.
19 June 2020 at 10:54 am #582657Daryl Dobbs
ParticipantNice picture, alas rain here in South Wales
19 June 2020 at 12:35 pm #582659John Chuter
ParticipantWhat a great picture, Peter.
19 June 2020 at 12:36 pm #582660John Chuter
ParticipantVery lucky. Clouded out for me and rained out…
19 June 2020 at 1:10 pm #582661Peter Gudgeon
ParticipantYes, an amazing picture, and lucky, as it was wall to wall heavy cloud in the part of Spain where I am.
19 June 2020 at 3:42 pm #582664Gary Poyner
ParticipantExcellent Andrew. Well done!
Alas nothing but heavy cloud here.
Gary
19 June 2020 at 4:11 pm #582663Peter Carson
ParticipantI watched the Venus Moon Occultation this morning from sunny Spain.
See my images here
https://britastro.org/node/22733
https://britastro.org/node/22732
https://britastro.org/node/22731
Venus was brighter than I had expected and is a little over exposed. I couldn’t make the exposures any shorter as the camera was already on its shortest setting.
19 June 2020 at 9:50 pm #582666Michael O’Connell
ParticipantWell done to everyone who captured the event!
Raining here unfortunately.
Michael.
21 June 2020 at 10:22 am #582668Tim Haymes
ParticipantWhat wonderful images of the event – thanks for sharing.
29 June 2020 at 4:05 pm #582701David Arditti
ParticipantBAA member John Sussenbach in the Netherlands had good conditions, and produced this lovely video. From my location it was too cloudy.
https://youtu.be/8SS-yjY5Wak -
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