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TagsAnd Aries ASAS binoculars BRT BSM Cas comets Dra Draconis EC Pickering Eric Stempels Friedrich Wilhelm Argelander Hans Bengtsson Henry Parkhurst Johan Kärnfelt Johan Warell Joseph Baxendell lightcurves Miras novae Otero R Ari RCB R Dra remote telescopes Robert Wahlström Robin Andersson SAAF Sebastian Otero semiregulars SRD sun sunspots SU Tau SVO T.H. Astbury Thomas Karlsson Tomas Wikander V370 And V538 Cas V2331 Cyg variable stars variable star section W Aur
Author Archives: Gustav Holmberg
Developing a variable programme
Hernán De Angelis has written two great blog posts on how to develop a programme for observing variable stars: here and here. Recommended reading!
Posted in Uncategorized Tagged Hernán De Angelis, variable stars Leave a comment
Meeting in Uppsala
Looking forward to SAAF:s meeting in Uppsala on October 12-13.
Posted in Uncategorized Tagged SAAF, variable star section Leave a comment
AAVSO on Twitter
I am a happy member of the AAVSO. The organization organizes amateurs and professionals on a global scale who are interested in variable stars; furthermore, the AAVSO has built up and maintained crucial parts of the infrastructure of variable star … Continue reading
Posted in Uncategorized Tagged AAVSO, variable stars Leave a comment
Is R CrB brightening?
R CrB has been on a plateau during some time, hovering 1.5-2 magnitudes below the normal maximum magnitude. But recently an upward trend has been visible; last night I observed it at 7.2. The current minimum must be one of … Continue reading
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Searching for a meteorite
The Swedish Allsky Meteor Network tracked a bolide on November 28, 2016 that could possibly have produced a fall. Calculations by Eric Stempels, coordinator of the network, gave coordinates on the ground, should the bright meteor have produced meteorites. On … Continue reading
Posted in Uncategorized Tagged Eric Stempels, Johan Warell, meteorites, SAAF, Swedish Meteor Network Leave a comment
Meeting with SAAF
Last weekend SAAF, the Swedish Association of Amateur Astronomers, met in Beddingestrand, for a couple of days of talks, observing &c. Great meeting old and new friends!
50 neglected miras is the theme for a programme run by SAAF/V, the variable star section of SAAF since February 2012. We have, at the time of writing, amassed 8826 observations, observations have been analysed and new knowledge has emerged … Continue reading
Posted in Uncategorized Tagged 25 meglected miras, 50 neglected miras, neglected miras Leave a comment
I just observed the Sun: no sunspots, just like the other day. The current sunspot cycle has been quite low. Since a number of years, I am reporting my sunspot observations to the international data centre in Brussels; monitoring such … Continue reading
Posted in Uncategorized Tagged solar activity, sun, sunspots Leave a comment
R Dra past max
The current R Dra maximum was, as noted earlier, comparatively bright. My brightest observation was at 6.2 on December 13. Here are the latest six maxima as reported by Swedish observers:
Posted in Uncategorized Tagged Miras, R Dra, variables Leave a comment
Bright max of R Dra
R Draconis is heading for a comparatively bright maximum. I observed it at 6.4 this evening. Yet another example of the personality of miras that makes them, even the brighter ones, such interesting phenomena to follow.
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