You might be looking at this website thinking Roger Groom is no longer with us. After all, it’s been something like a year since I updated this site. Well, I am still here! Just busy with other things. Life gets busy sometimes.
So why haven’t I been posting here? Well, I have been busy:
I still have a day job (amazing, I know!)
I am busy running astrophotography workshops (both online via Facetime, Skype, Teams and Zoom) and in person with Perth Observatory, Stargazers Club WA and my own one-on-one workshops at various locations.
Astro Observatories Western Australia is a new business I am running in the Central Wheatbelt to remote host telescopes. The site has fantastic world-class dark skies, flat horizons, but, requires an awful lot of work to maintain and improve! So I am spending many days and nights there with my family working on the site.
Here are a few nice landscape photographs from a recent trip to my dark sky property in the Central Wheatbelt region of Western Australia, just to prove I still do take landscape photographs, if not published so regularly!
Back at Kalbarri in Westen Australia’s mid-west region for a family holiday, I’ve been snapping some new pics of the area. Fitting photography in around a 1 year old’s eat and sleep routine is not impossible but it does preclude photography at one of the ideal times of day: evening/sunset. So, we make do with what we can!
This is a nice gesture. In 2014 I recorded observations of the comet that the spacecraft Rosetta (with Philae lander) was approaching over many nights, providing these to Padma who collated such data from amateur astronomers. It’s nice to have something in appreciation of the efforts.
Video sequence of the minor planet 8474 Rettig moving across the night sky.
I often participate in astronomical research by way of providing observations to other amateurs and to professionals. The promise is always there of credit for the observations but rarely has it actually eventuate in to anything published with my name on it. Here’s one from recently I’m happy to be involved in and credited for my participation (which was a small but useful contribution):
Electronic Telegram No. 4122 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail: firstname.lastname@example.org (alternate email@example.com) URL http://www.cbat.eps.harvard.edu/index.html Prepared using the Tamkin Foundation Computer Network (8474) RETTIG V. Chiorny, Kharkiv Observatory; V. Benishek, Belgrade Astronomical Observatory, Serbia; P. Pravec and P. Kusnirak, Ondrejov Observatory; Yu. N. Krugly, Kharkiv Observatory; J. Oey and R. Groom, Blue Mountains Observatory, Leura, NSW, Australia; V. Reddy, Planetary Science Institute; D. Pray, Sugarloaf Mountain Observatory, South Deerfield, MA, U.S.A.; W. Cooney and J. Gross, Sonoita Research Observatory, Sonoita, AZ, U.S.A.; D. Terrell, Southwest Research Institute; R. Inasaridze, V. Ayvazian and V. Zhuzhanidze, Abastumani Observatory; R. Montaigut and A. Leroy, OPERA Observatory, France; and I. Molotov, Keldysh Institute of Applied Mathematics, Moscow, report that photometric observations obtained during May 19-July 23 reveal that minor planet (8474) is a binary system with an orbital period of 30.54 +/- 0.01 hr. Mutual eclipse/occultation events that are 0.60- to 0.93-magnitude deep indicate a lower limit on the secondary-to-primary mean-diameter ratio of 0.86. Rotations of the components appear to be synchronous with the orbital motion and an amplitude of the combined primary plus secondary rotational lightcurve is 0.34 mag at solar phases 7-15 deg.
NOTE: These ‘Central Bureau Electronic Telegrams’ are sometimes superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2015 CBAT 2015 July 26 (CBET 4122) Daniel W. E. Green