Imaging of miscellaneous objects with a Celestron C11
Sirius A en B, 10,000 fold difference in luminosity!
23 January 2004, C11 prime focus
Double stars: Altair; iota Cassiopeiae (2.8 and 7.3", m 4, 7 and 8); beta Cygnii (34") and epsilon Lyrae (2.5 and 2.3")
July 6, 2004. Primary focus of a C11
Exposures of binary stars made on June 24, 2002, with a C11 and a Philips ToUcam Pro.
Exposure time 1/33 sec. Seeing: average . For processing the Registax program was used
Zeta Bootis; Separation 0.7",mag 4.5 - 4.5; a 2x Barlow lens (Televue) was used.
Beta Cygni; Separation 34.2", mag 3.1 - 5.1; in primary focus of C11. Note the colour difference
Epsilon Lyrae, the Double Double, 208" separation
Epsilon1 Lyrae (left): Separation 2.6", mag 5.0 - 6.1 and Epsilon2 Lyrae (right): Separation 2.3", mag 5.2 - 5.5; in primary focus of C11
Epsilon Bootis; Separation 2.9", mag 2.5 - 4.9; with C11 and 2x Barlow. Note the colour difference
Gamma Andromedae; Separation 9.8", mag 2.3 - 5.5; with C11. Note the colour difference. Very poor seeing
Beta Delphini; Separation 0.6", mag 4-5; with C11 plus 2x Barlow.
M57 taken with a C5 telescope plus a Philips ToUcam modified according to the procedure of Steve Chambers to use long exposure times. The picture is the result of stacking 30 pictures of 30 sec and correcting for dark frame using K3CCDTools. The seeing was very poor (fog and clouds, visual bordermagnitude 2-3)
M57 taken with a C5 telescope plus a modified Philips ToUcam. The picture is the result of stacking 45 pictures of 30 sec and correcting for dark frame using K3CCDTools. Processing (contrast, correction back ground colour and brightness) was done with Paint Shop Pro. Date August 13, 2002
M57 taken with a C5 telescope plus a Philips ToUcam modified according to the procedure of Steve Chambers to use long exposure times. The picture is the result of stacking 45 pictures of 30 sec and correcting for dark frame using K3CCDTools before processing with paint Shop Pro. Date August 13, 2002. This picture has a magnitudelimit of 17.7
M13 taken with a C5 telescope plus a Philips ToUcam modified according to the procedure of Steve Chambers to use long exposure times. The picture is the result of stacking 30 pictures of 30 sec and correcting for dark frame using K3CCDTools. Further processing with Paint Shop pro.
M27 taken with a C5 telescope plus a Philips ToUcam modified according to the procedure of Steve Chambers to use long exposure times. The picture is the result of stacking 30 pictures of 30 sec and correcting for dark frame using K3CCDTools. Further processing with Paint Shop pro.
NGC 2392 (Eskimo Nebula) taken with a C11 telescope plus 0,6 x focal reducer and a Philips ToUcam modified according to the procedure of Steve Chambers to use long exposure times. The picture is the result of stacking 30 pictures of 15 sec and correcting for dark frame using K3CCDTools. Further processing with Paint Shop pro.
