Asteroid 70850 Schur in Aries
with 10" f/3.9 Astrograph
Uploaded 10/26/17


Asteroid 70850 Schur
We finally had the opportunity to attempt to image our asteroid this month after a year of waiting for it to become favorably placed in the evening sky. Surprisingly, the 10 inch will go to magnitude 19 or so in a 2 hour exposure with the ST10xme CCD camera. A few faint galaxies appear also in this image, along with several other unamed asteroids of similar brightness. Thanks Rik!
Full frame shot with the field objects labeled. I also put the asteriods magnitudes with each one. Select an image size for a larger view: 1600 x 1200
Here is the chart image from Cartes du Ciel charting program showing the exact location of all asteroids in the field at both the start and ending time for our exposure. They travel from left to right in 2 hours. Select an image size for a larger view: 1290 x 960
Here I ve overlain a negative image of the map above and registered it to the star pattern. You can see that the asteroid tracks line up perfectly allowing us to clearly identify all objects in the field. Select an image size for a larger view: 1600 x 1200
Unlabeled full field shot, about half a degree width. Select an image size for a larger view: 1600 x 1200
Instrument: 10" f/3.9 Orion Astrograph Newtonian with Baader MPCC Mount: Astrophysics 1200 QMD CCD Camera: SBIG 10XME NABG with Enhanced Water Cooling Guider: Meade DSI Pro w/80mm piggyback refractor Exposure: 2 hours LRGB AstroDon RGB Combine Ratio: 1: 1.05: 1.2 Location: Payson, Arizona, Elevation: 5150 ft. Sky: Seeing FWHM = 3 arcsec , Transparency 7/10 Outside Temperature: 55 F CCD Temperature: -20 C Image Processing Tools: Maxim DL6: Calibration, deblooming (Starizona Debloomer), aligning, stacking PixInsight: Curves, Deconvolution Photoshop CS2: Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS GLOBULARS OPEN CLUST PLANETARIES LINKS