Optical and radio brightening of BL Lacertae
Posted 23 July 2012 - 03:27 PM
Anyone following this exiting object?
Posted 28 July 2012 - 09:03 PM
Interesting objects, are there others within the light grasp of a small telescope?
Posted 29 July 2012 - 05:34 AM
While reading up on the BL Lac objects I found this very interesting paper "Photometric Analysis of the
Brightness Variation of AGN Cores, By Nicholas J. Long April 9, 2012"
In the paper there's 4-5 more of these objects.
He uses a small 8" newt, some very standard filter incl. a h-beta to do some interesting science.
The observations with the h-beta filter will only work en bright nearby Seyferts.
About BL Lacertae, I can see AAVSO have sent out an request for observations.
Posted 29 July 2012 - 05:54 AM
S5 0716 +71 (Cam): usually mag 13 or 14 and circumpolar for northern temperate latitudes
Markarian 421 (UMa): usually around mag 13. Somewhat difficult to observe visually due to nearby brightish star (Flamsteed 51).
Both of these show considerable variation if observed at intervals of a few days. They're more active than BL Lac usually is!
Posted 29 July 2012 - 09:31 PM
Thanks for the info. I'll add these to the list of exotic targets (quasars etc) that I monitor when there's only an hour or so of decent weather to image.
Posted 02 October 2012 - 06:07 PM
The last couple of month I have worked on my photometric project on Blazars, and especially BL Lac objects.
So over the last couple of weeks I have tested my observatory set-up and some remote facilities. I have no problems with detecting the continuum variations with my own telescope and the remote facilities and it looks like I can detect variation in H-beta.
During the test on sep. 19 th. there was reports about huge variations on CTA 102, so I made some observations.
A graph from tonight shows the large jumps around sep. 20-22 and some minor variations over the last 48 hours.
Lightcurve CTA 102
So nice to have some results from my first photometric observations.
Posted 02 October 2012 - 08:35 PM
M77 (NGC 1068)