Ian Sharp has been using the SSO remote facility again and has submitted this image of the 3rd brightest globular cluster in the sky, in the southern constellation of Pavo. The image is an RGB comprising 2 hours of each component - all are 600
second exposures.
The details of the equipment used are:
Optical Tube Assembly RCOS 12.5” F/9 (2857mm focal length)
Carbon-Fibre Tube w/TCC2, PIR and FFC
Equatorial Mount Bisque Paramount ME
Imaging Camera Apogee F16M-D9 (KAF-16803) with 7 slot filter wheel
Imaging Camera Filters Astrodon Series II L,R,G,B, Ha (5nm), OIII (3nm) and SII (3nm)
Guided using a MMOAG with SBIG ST-402ME guide camera
The system delivers a 44x44 arcmin FoV operating at .65 arcsec/pixel