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[Login] Forum Archives · Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Observing >> Variable Star Observing and Radio Astronomy Previous   Index   Next   Threaded   Pages: 1 jgraham Postmaster Reged: 12/02/04 Posts: 6695 Loc: Dayton, Ohio Z CrB Approaching Mid-cycle       #3196113 - 07/02/09 10:51 PM Attachment (11 downloads) Edit   Reply   Quote Quick Reply   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. -------------------- -John ================================================ Homebuilt scopes from 4.25-16.5" Meade LXD75-N6/SN6/SC8, DSX-90, ETX-60BB, ETX-125PE, DS-2130 Orion StarBlast, BinoViewers, Coronado PST Rebel XT/XTi, DSI Pro (I, II, & III), DSI, LPI, Electronic Eyepiece, Phillips SPC900NC Tasco 60mm Refractors Post Extras:       jgraham Postmaster Reged: 12/02/04 Posts: 6695 Loc: Dayton, Ohio Re: Z CrB Approaching Mid-cycle [Re: jgraham]       #3196114 - 07/02/09 10:52 PM Attachment (7 downloads) Edit   Reply   Quote Quick Reply   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. -------------------- -John ================================================ Homebuilt scopes from 4.25-16.5" Meade LXD75-N6/SN6/SC8, DSX-90, ETX-60BB, ETX-125PE, DS-2130 Orion StarBlast, BinoViewers, Coronado PST Rebel XT/XTi, DSI Pro (I, II, & III), DSI, LPI, Electronic Eyepiece, Phillips SPC900NC Tasco 60mm Refractors Post Extras:       jgraham Postmaster Reged: 12/02/04 Posts: 6695 Loc: Dayton, Ohio Re: Z CrB Approaching Mid-cycle [Re: jgraham]       #3196115 - 07/02/09 10:53 PM Attachment (11 downloads) Edit   Reply   Quote Quick Reply   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. -------------------- -John ================================================ Homebuilt scopes from 4.25-16.5" Meade LXD75-N6/SN6/SC8, DSX-90, ETX-60BB, ETX-125PE, DS-2130 Orion StarBlast, BinoViewers, Coronado PST Rebel XT/XTi, DSI Pro (I, II, & III), DSI, LPI, Electronic Eyepiece, Phillips SPC900NC Tasco 60mm Refractors Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 0 registered and 0 anonymous users are browsing this forum. 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