WebMar 4, 2024 · Thanks! I am using a 6 inch SCT on a standard alt az goto mount. The standard celestron nexstar tracking mount. The scope does have a long focal length of 1500 mm, like you mentioned. I used the standard kellner eyepiece supplied with the telescope itself. Web15 hours ago · Using a long focal-length telescope with a bigger aperture is essential to capture the intricate details of these objects, which cannot be captured with what I call “beginner” mounts for astrophotography, like the Celestron AVX or SkyWatcher HEQ5 Pro. ... In the astrophotography world today, one of the first decisions to make is …
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WebAstrophotography Photography Art Hobbies comments sorted by Best Top New Controversial Q&A Add a Comment CVGridley • ... Low weight + longer focal length is gonna be tough to find outside of some very questionable catadioptric mirror lenses. You could theoretically put 1.5x barlow somewhere in your image train. WebOct 18, 2024 · It will depend on the pixel size of the sensor, and the focal length of the scope, if you want to fully resolve the cluster in say 1 arcsecond seeing. So you have about 4 micron pixels in that camera. To get Nyquist sampling you will want 1 arcsecond to map into 8 microns at the sensor. pens that work with pixelbook
Astrophotography and F ratio - Cloudy Nights
WebApr 2, 2024 · This lens is a great choice for astrophotography, handheld shooting in low light, and close focus wide-angle photos. The sharpness is impressive, even wide open, corner to corner. It’s great for capturing sharp stars even wide open at f/1.7. ... The 90mm focal length allows for a comfortable working distance between you and your close-up ... WebApr 1, 2024 · By far the simpler of the two popular rules for astrophotography is the 500 rule. It recommends that your shutter speed is equal to 500 ÷ Equivalent Focal Length. So, if your full-frame equivalent focal length is 20mm, the 500 rule would suggest that you use a shutter speed of 500 ÷ 20 = 25 seconds. If you’re using a 50mm lens instead, it ... WebOct 29, 2007 · A 6" f/8 scope will form an image size that is based on the focal length of the scope, in this case 48". A 6" f/5 scope again makes an image based on it's focal length, in this case 30". The size is more or less directly proportional to the focal length. So the image (of the same object) in an F/5 is smaller then that from an F/8. pens that write in gold