The small constellation of Sagitta the arrow in the northern summer sky. At left of centre is the Messier 71 star cluster. At upper left is the M27 Dumbbell Nebula. The field is about equal to a binocular view, as it was shot with a 135mm telephoto on the Canon 60Da. This is a stack of 4 x 80 second exposures at f/2.2 and ISO 1600, unguided on the Sky-Watcher Star Adventurer tracking mount. Two additional exposures with the Kenko Softon filter blended in to provide the fuzzy star glows. Taken from home, August 18, 2014.
The small constellation of Sagitta the arrow in the Milky Way, with the cluster M71 left of centre. The field is similar to what a pair of large binoculars would show. I shot this from home Nov. 25, 2019. This is a stack of 6 x 2-minute unguided exposures with the 200mm Canon telephoto at f/2.8 and stock Canon 6D MkII at ISO 1600. An additional exposure taken through the Kenko Softon A filter adds the star glows. All were with the camera on the Fornax LighTrack II tracker.
The small constellation of Sagitta the Arrow, in the Milky Way. The small globular cluster, Messier 71, is between Gamma Sagittae and Delta Sagittae. Below M71 is the very sparse star cluster Harvard 20. The emission nebula Sharpless 2-84 is supposedly at centre but does not show up here except perhaps as a dim blue area of reflection nebulosity, though there is some faint red emission nebulosity at lower right. This is a stack of 10 x 5-minute exposures through the SharpStar 61EDPH II refractor with its flattener/reducer at f/4.6 and the red-sensitive Canon Ra, though with no filter employed here. The mount was the little Star Adventurer GTi portable GoTo mount undergoing testing, and autoguided with the ZWO ASIAir and its little 30mm guidescope, with the Air also controlling the Ra and performing dithering moves between each exposure. The guiding worked very well. No darks or LENR were applied here, but the stacking averaged out the thermal noise hot pixels on this fairly warm autumn night, September 27, 2022. All stacking and alignment with Photoshop. A mild Orton Glow effect added with Luminar AI.
