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Hello Edward,
if you type “hyperstar” into the Search box towards the top right of the page you will find some images taken with the hyperstar.
All the best,
Jeremy
Hello Ian and welcome to the BAA!
There are quite a few members who enjoy observing double stars. The Deep Sky Section’s John McCue is the DSS Double Star Adviser. He has written a tutorial on the measurement of double stars on the website. John has written another article on double stars here.
Nick White has written and article on the technique with which he observes double stars in the 2017 April edition of the Journal which you can read here (to read the whole article you need to be logged into the BAA website).
There are also some members who use lunar occultations to detect very close double stars (there are two dips in brightness as each component is occulted). An example by Alex Pratt is shown on his Members Page.
These are only a few examples of double star activity within the BAA. You mention there is quite a bit on our website, so do enjoy looking around. You might be interested in this article by Callum Potter about colourful double stars of the summer (which I hope will soon be here!).
All the best,
Jeremy
This article in today’s Independent talks about the impact of white LEDs on human health.
Dr Mario Motta, amateur astronomer and member of the American Medical Association, will be talking about this emerging problem during the BAA summer meeting (during the Sunday session).
Jeremy
Many thanks for the update on this fascinating piece of work, Alex. Do keep us posted on what Bruno Sicardy finds out about the atmosphere.
Jeremy
There is some more discussion on condensation here.
Jeremy
possibly, Grant. But the corrector plate is obviously still exposed as it looks out of the dome slit.
Jeremy
Grant,
I use a standard dew heater band on my C11, near the corrector plate. I used to have a dew shield as well, but it was a pain as I kept dislodging it as I moved around the obsy. Moreover, if I needed to cap the telescope during breaks in observing, or to produce CCD dark frames, I had to take the shield off, put the cap on and then reverse the operation to start observing again. Too much of a hassle!
I look forward to seeing your results with the RASA.
Jeremy
I too got an Atlas Coeli in around 1977. My father had to arrange some kind of bank transfer to order it from the US. I owned it into the 90’s, but then gave it to someone else. I never had the negatives. I recall there were desk and field editions of the atlas available. I still have the catalogue, but I’m not sure I ever used it in earnest!
Let us know what you turn up, Tony.
Jeremy
Thanks Grant. The ideal way would be to post to you BAA Members Page and let me know you have done it – I can download from there. Alternatively (and this also goes for people who don’t have a Members Page) send directly to me via email. My email address is in the Journal, or use the “send email” button below my name.
I will share any images I receive in the next week with the person who has raised the question and let them choose.
All the best,
Jeremy
Congratulations, Robin.
This is excellent and valuable work that you are carrying out.
All the best,
Jeremy
More details in the BAA article by Alex on the front page of the BAA website.
We have arranged for members who may be staying in Chester overnight on the Saturday/Sunday of the Chester meeting to observe from a farmer’s field in the village of Waverton, 3.5 miles south of Chester. This is just on the S edge of the predicted track, but the track has some uncertainty associated with it. This is a rural location and people wishing to observe from here need their own transport and instrumentation.
Dear Bill,
sorry it’s taken me while to locate the image. If it is the photograph of the lunar eclipse of 1931 Sept 26, I see no problem with using that image, with appropriate credit to the photographer and a reference to the JBAA.
Kind regards,
Jeremy
Hello Bill,
The Journal is copyright of the the BAA. Individual articles, illustrations, etc. remain the copyright of the author or the imager, whose permission must also be obtained.
I suggest you contact the author of the article in which the image you are interested in appears. In my experience this is usually all that is required. They may request you give some sort of credit for using the image and you might like to consider citing the BAA Journal. It’s worth bearing in mind they they might not own the copyright either, but have permission from the actual copyright owner to use it for the sole purpose of illustrating their article – in which case you need permission from the actual owner.
I hope this helps.
Kind regards,
Jeremy
Hello David,
the AAVSO charts that are _plotted_ with dots for stars do have stars missing in some areas. But you can also request the Variable Star Plotter to send back a DSS _image_ of the field instead (there is a tick-box in the VSP set-up box for that). If you do that, the image does show your star I think. Here’s the link to a chart that shows the field (I hope it appears correctly in the post as it’s a very long address!):
All the best,
Jeremy
Indeed, it looks intriguing, Gary. I’m not quite sure what to make of it, but I’d certainly like to give it a try.
Jeremy
That’s a great interview, Mike. You made a very good case for William Pearson and covered some fascinating anecdotes about him.
Well done!
Jeremy
There are some reviews here:
http://alpha-lyrae.co.uk/2014/10/25/vixen-sg-2-1×42-binoculars-review/
http://www.ianmorison.com/vixen-2-1-x-42-mm-wide-field-binoculars-review/
Jeremy
