3rd SeptemberSH2-155 Cave NebulaAll exposures 10 minutes. 18 Ha, 12 SII, 14 OIII Very little to be seen with the OIII filter. ![]() Different processing. OIII enhanced and less saturated. ![]() 7th September SH2-112 A nebula in Cygnus. Very bright Moon, but the H-alpha filter was up to the task. 18 x 10 minutes ![]() September 9th Testing the Zambuto telescope. 12x10 minutes of ngc7000, North America nebula in Ha. ![]() September 10th SH2-112 14x10 minutes using the Zambuto 8" Wider field of view than with the 10". 38x51 minutes as opposed to 30x40 minutes ![]() 21st September Some test shots of M31 using the Zambuto scope. 12x5 minutes Luminance filter ![]() Image quality looks good, but there is a horizontal line across the lower part of the image. I suspect that this is a diffraction artefact from the nearby star, Nu And This is a mosaic made up from my image and the DSS images. Nu And looks like the culprit. I have made an extended lightshield and will try it out the next clear night. ![]() There are two recent novae in M31, which show up in my images. PNV J00432372+4122256 ![]() PNV J00434997+4114049 ![]() September 24th The carbon fibre tube scope is living up to expectations. I made a 40 star pointing model a few days ago, and tested the pointing accuracy tonight. The first star chosen was Vega and the image showed it to be very close to the centre of the frame. 4 other stars followed and then M31. This is the result. (Observatory light accidentally left on, so the M31 image is fogged). ![]() The errors in pixels were: 48, 62, 42, 28, 49, 58, 49 which corresponds to : 57, 74, 50, 33, 58, 69, 58 in arcseconds The average pointing error in arcseconds is 57 RMS error is 33 arcseconds |