M-33 Pinwheel Galaxy Images

M-33 is about 15 degrees down and to the left of M-31. It too is a large galaxy, about two full moons tall and 1.5 full moons wide. The Orion MAK 500 is my 90 mm guide scope. This image was made as I attempted a film image of M 33 through my 8" LX 200. The film image was foiled by improper film advance, so my only record of the session is from the guide scope image taken by the MX-5C while the scope was being guided by the STAR 2000. The top LX 200 image was taken about a year later and serves as a good comparison between an 8-inscope and a 90 mm scope, since the exposure times are the same. The bottom LX 200 image is a composite of four separate MX-5C images. Each of these images were generated by eight track and accumulate exposures of 3 min each.

	Scope: Orion 90 mm MAK 500
	M-5C CCD Camera & STAR 2000
	Focal Ratio: f5.5
	Exposure: Combined 3x20 min exposures
Compare this image with the one above to see the difference between an 8" scope and a 90 mm scope.	Scope: 8" LX 200 SCT
	M-5C CCD Camera & STAR 2000
	Focal Ratio: f3.3
	Exposure: Combined 3x20 min exposures
	Scope: 8" LX 200 SCT
	M-5C CCD Camera
	Focal Ratio: f4.6
	Exposure: Mosaic of 4 24 min images
	Link to the SEDS M-33 Page
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M-33 "Pinwheel Galaxy"
	Constellation: Trianglum Size: 65.6 x 38.0 arcmin Magnitude: 6.3 RA: 01h 39m 37s Dec: 30 d 39m 37s
M-33 is about 15 degrees down and to the left of M-31. It too is a large galaxy, about two full moons tall and 1.5 full moons wide. The Orion MAK 500 is my 90 mm guide scope. This image was made as I attempted a film image of M 33 through my 8" LX 200. The film image was foiled by improper film advance, so my only record of the session is from the guide scope image taken by the MX-5C while the scope was being guided by the STAR 2000. The top LX 200 image was taken about a year later and serves as a good comparison between an 8-inscope and a 90 mm scope, since the exposure times are the same. The bottom LX 200 image is a composite of four separate MX-5C images. Each of these images were generated by eight track and accumulate exposures of 3 min each.