| jgraham |
| (Postmaster) |
| 07/02/09 10:51 PM |
| Attachment |
|
Z CrB Approaching Mid-cycle
|
Time & Date: 2h 45m, 6/29/2009 UT
Telescope: Meade LXD75 SN6
Camera: Meade DSI Pro II
Filter: Schuler V Photometric
Exposure: 10x60sec, saved as FITS
Guide scope: Meade DSX-90, PHD
Software: Envisage, Autostar Suite Image Processing, Photoshop Elements
Z CrB is a fairly well behaved Mira-type variable presently well placed for northern observers. When I first started observing Z CrB it was just past minimum and is now about halfway to its next maximum. Presently at about magnitude 12.9 it should brighten to just around 9th magnitude making it by far the brightest star in the field.
| jgraham |
| (Postmaster) |
| 07/02/09 10:52 PM |
| Attachment |
|
|
|
Re: Z CrB Approaching Mid-cycle
|
This shows a summary of the observations of Z CrB posted on the AAVSO web site over the past year. Looking back over the past couple of year’s worth of data Z CrB is a well behaved Mira-type variable that for some reason has been sparsely observed during the last cycle. GHN are my observations.
| jgraham |
| (Postmaster) |
| 07/02/09 10:53 PM |
| Attachment |
|
|
|
Re: Z CrB Approaching Mid-cycle
|
Time & Date: 3h54m, 6/1/09 and 2h 45m, 6/29/2009 UT
Telescope: Meade LXD75 SN6
Camera: Meade DSI Pro II
Filter: Schuler V Photometric
Exposure: 10x60sec, saved as FITS
Guide scope: Meade DSX-90, PHD
Software: Envisage, Autostar Suite Image Processing, Photoshop Elements
These are cropped images taken from my first and most recent observations of Z CrB. It’ll be neat to see this star at both its maximum and minimum as it swings between being the brightest to one of the faintest stars in the field. (Note that my first observation was about a full magnitude past Z CrB’s last minimum.) These images are a lot of fun to blink and it’d be nice to get enough images to put together an animated GIF.