Search found 21 matches

by Tracie Heywood
Fri Sep 18, 2020 6:22 pm
Forum: Observing
Topic: Betelgeuse fades again
Replies: 11
Views: 424

Re: Betelgeuse fades again

My latest brightness estimate, made just after 4am this morning, placed Betelgeuse at mag 0.9 - so unchanged from the end of August.
by Tracie Heywood
Fri Sep 18, 2020 6:18 pm
Forum: Observing
Topic: Eta Gem heading towards its 2020 eclipse
Replies: 1
Views: 111

Re: Eta Gem heading towards its 2020 eclipse

Another observation this morning just before 4am placed eta Gem at mag 3.7 (comparisons epsilon Gem and 1 Gem). This is below the lower limit of the semi-regular variations that I usually see. Time will tell whether this is just an unusually deep semi-regular minimum or if the eclipse is starting a ...
by Tracie Heywood
Fri Sep 18, 2020 6:14 pm
Forum: Observing
Topic: Mira visible with the unaided eye and heading for maximum
Replies: 6
Views: 215

Re: Mira visible with the unaided eye and heading for maximum

Observed Mira again in the pre-dawn hours of this morning and estimated to be mag 3.8 (gamma Cet -2)
by Tracie Heywood
Wed Sep 02, 2020 2:00 pm
Forum: Observing
Topic: Mira visible with the unaided eye and heading for maximum
Replies: 6
Views: 215

Re: Mira visible with the unaided eye and heading for maximum

I found out that the contemporary approximate maxima for Mira will be Sep 20, 2020. Dates of upcoming maxima can be tricky to predict in advance. Although the period of Mira is usually quoted as the rather precise 331.6 days, this is merely the average duration over many decades of the gap between ...
by Tracie Heywood
Mon Aug 31, 2020 7:19 pm
Forum: Observing
Topic: Mira visible with the unaided eye and heading for maximum
Replies: 6
Views: 215

Mira visible with the unaided eye and heading for maximum

Mira (omicron Ceti) emerged from the morning twilight in late July, but for over a month cloud hindered my attempts to observe it. I finally managed to observe it yesterday morning and estimated it to be mag 4.0 (gamma Cet - 5, delta Cet + 1) The 2020 maximum of Mira will most likely occur during th...
by Tracie Heywood
Mon Aug 31, 2020 7:08 pm
Forum: Observing
Topic: Eta Gem heading towards its 2020 eclipse
Replies: 1
Views: 111

Eta Gem heading towards its 2020 eclipse

Clear skies this morning allowed me to make my first post-conjunction observation of Eta Geminorum. Eta Gem is best known as a semi-regular variable with a brightness range of approx half a magnitude. I see its range as 3.1-3.6, but other observers may see a slightly brighter or slightly fainter ran...
by Tracie Heywood
Mon Aug 31, 2020 6:50 pm
Forum: Observing
Topic: Betelgeuse fades again
Replies: 11
Views: 424

Re: Betelgeuse fades again

The clouds finally cleared enough to allow me to make my first post-conjunction observation of Betelgeuse. I estimated it to be approx mag 0.9 (gamma Ori + 7) ... seven 'steps' is of course stretching the Step Method rather further than is desirable. I would have liked to have compared Betelgeuse wi...
by Tracie Heywood
Tue Apr 16, 2019 5:02 pm
Forum: Observing
Topic: Meteor/Fireball
Replies: 7
Views: 3086

Re: Meteor/Fireball

Most likely the fireball seen was this one:

https://fireballs.imo.net/members/imo_v ... /2019/1242
by Tracie Heywood
Tue Jun 12, 2018 12:36 pm
Forum: Observing
Topic: R Leonis bright
Replies: 2
Views: 1603

Re: R Leonis bright

Here is my light curve for R Leonis in the first half of 2018. Cloudy skies hindered observations during much of this time, but clear spells in May allowed better coverage of the fade. Over the years the average peak has been around mag 5.8, so this one was much brighter than the average. I have now...
by Tracie Heywood
Wed May 02, 2018 10:24 pm
Forum: Observing
Topic: Bright (mag 6) nova in Perseus
Replies: 9
Views: 3531

Re: Bright (mag 6) nova in Perseus

Managed to make an estimate using the AAVSO chart just before the cloud rolled in

21:41 UT V392 Per = 79-5, 86+3 Deduced mag 8.4 (11x80B) class 2 (averted vision for 86 comp)
by Tracie Heywood
Mon Apr 30, 2018 10:28 pm
Forum: Observing
Topic: Bright (mag 6) nova in Perseus
Replies: 9
Views: 3531

Re: Bright (mag 6) nova in Perseus

It is fading ... estimated at mag 7.3 at 22:05 UT tonight (70-3 on the AAVSO chart). You can download a chart for V392 Per from the AAVSO website https://www.aavso.org/apps/vsp/ This , by default, plots a narrow field chart with a LM of 14.5, but if you use the following link, you'll get a wider fie...
by Tracie Heywood
Mon Apr 30, 2018 12:21 pm
Forum: Observing
Topic: Bright (mag 6) nova in Perseus
Replies: 9
Views: 3531

Bright (mag 6) nova in Perseus

A mag 6 nova was discovered in Perseus yesterday by Japanese observer Yuji Nakamura. The position of the nova (RA 04 43 21.38, Dec +47 21 25.9) coincides exactly with that of another variable star V392 Persei, which was already known to produce small dwarf-nova type outbursts (the most recent of whi...
by Tracie Heywood
Sun Jan 21, 2018 11:04 am
Forum: General chat
Topic: does anyone actually just "LOOK"
Replies: 14
Views: 4163

Re: does anyone actually just "LOOK"

It is sadly the case that the more you get into observing it can be very easy to get to know increasingly smaller areas of the sky in ever greater detail. I have to admit that when variable star observing using my binoculars, I only briefly glimpse at the whole sky between observing one star and the...
by Tracie Heywood
Mon Jan 08, 2018 6:21 pm
Forum: Observing
Topic: Light curve for primary eclipse of RZ Cas
Replies: 3
Views: 2002

Light curve for primary eclipse of RZ Cas

Here is my light curve showing the primary eclipse of RZ Cas that occurred during the early hours of 2018 Jan 8th. Brightness estimates were made every 20-25 minutes using 11x80 binoculars. RZ Cas is an Algol-type eclipsing binary whose eclipses last for just under 5 hours. Observing conditions were...
by Tracie Heywood
Mon Jan 08, 2018 6:03 pm
Forum: Observing
Topic: Light curve for primary eclipse of U Cephei
Replies: 2
Views: 1863

Light curve for primary eclipse of U Cephei

Here is my light curve for the primary eclipse of the Algol-type eclipsing variable U Cephei during the night of 2018 Jan 7-8. Brightness estimates were made every 30 minutes or so using 11x80 binoculars. Conditions were good - sky was cloud-free. The near last quarter Moon rose midway through the e...