Forum Replies Created
-
Posts
-
I’ve just seen it visually at mag. 12.0 on Jly 16.948 UT, It’s a very red field, so poor comparison choices (high B-V).
Gary
EDIT July 18: With the release of the AAVSO sequence, the above magnitude of 12.0 should be revised to 12.3. Fortunately the AAVSO selected the same comparison star I used, but with a slightly fainter value.
Gary
I recorded it at 10.51CV on a SLOOH image on Jly 16.158 UT.
There is a close 151 star a couple of arc seconds away, so my measure was of a blended object. Very difficult at minimum visually to get a good measure.
Gary
CG Dra currently in outburst …
Jly 04.909 16.77CV; Jly 05.951 15.98CV; Jly 06.695 15.89CV
About 20d since previous (long) outburst.
Gary
It appears that the slightly overdue outburst of CG Dra has finally started…
June 16.895 UT 15.87CV (SLOOH)
Gary
Observed with 10x50B and a 5 degree chart drawn with VSP using the 61 star, I get 6.2 on June 12 at 22h 06m UT.
Gary
Nick,
Nope. Thought long and hard but decided not to apply for tickets. I would never have got my small Dob in anyway 😉
Gary
CG Dra has been slowly rising to outburst over the past couple of nights…
May 10.06UT 17.06CV
May 12.01UT 16.88CV
May 12.98UT 16.15CV
May 13.95UT 15.90CV
Uisng both the OU COAST and SLOOH 2
Gary
Stewart,
ER UMa at 12.4 visual on May 05.063UT. My previous observation was 14.6 visual on May 01.965UT
Gary
Hi David,
It seems the BAAVSS database has not combined the alias ‘Nova Cas 2021’ with the correct designation V1405 Cas. The latter shows visual and other photmetric data – which also shows the rise in brightness.
Gary
Happy New Year everyone.
Observing statistics for 2020, with 2019 in parentheses. Birmingham!
2020 proved to be my clearest year since my records began in 1978, beating the previous best in 1995 by 3 nights. 1995 had many more totally clear nights than 2020 however. The excellent Spring helped, with 50 observable nights in March, April and May alone!
Clear nights (less than 50% cloud) 44 (29)
Partially clear nights (50% or more cloud) 95 (61)
Total observable nights 139 (90) with 67 of these nights having Moonlight interference. I made observations on 134 nights.
Total hours at the telescope 296.92 hrs (189.8)
Best month May with 24 nights (12 partially clear and 12 clear). (August 12)
Worst month February with 6 nights (5 partially clear and 1 clear) (November 4)Birmingham Met office gave incorrect information on cloud cover for 79 nights during 2020
Total visual VS observations for 2020 is 10,717, an increase by 3,897 on 2019. CCD single measures using remote telescopes COAST, SLOOH and the AAVSO SRO-50 are 1,909 for 2020 against 1,903 for the previous year.
I’ve seen a number of ‘dust dips’ over the years, and 6 weeks in low state seems to be a fair average time before a rise sets in again in the very obvious ones. There are exceptions – for example, V2362 Cyg (Nova 2006) faded 4 mags from 8-12 before a 16 week plateau set in, then rebrightened to mag 10 before a very rapid decline followed by a gradual fade to quiescence. This was a dusty Nova, but the hot dust was probably confined to the inner region of the system. Going on the quite unusual behaviour so far seen in V1391 Cas, it will be interesting to see what happens next over the coming months.
Gary
This classic DQHer dust dip started slowly in late November and increased in mid December. Here is my plot so far…
Gary
Nearly 🙂 Although with all this cloud, I’m just hoping I get to see it when at it’s brightest!
The AAVSO doesn’t yet recognise the new designation (V1112 Per), although I suspect it will very soon. There are some bright comparison stars on the 3 degree (180′) AAVSO chart that observers will need to use.
Gary
One might even try looking at it 🙂 Mag 9.5 last night (Nov 26th) and looks to be brightening further, so binocular territory once the Moon is out of the way.
Gary
