Photo of the comet Ikeya-Zhang. The photo was taken using the following equipement:
Camera: Pentax 6x7
Lens: Pentax Takumar 400mm f/4.0
Film: Fuji Provia 400
Exposure: 10min. at f/4
Scan: Umax Astra 1220S with transparency adaptor
Processing: Removing of vignetting and gradient (light pollution); the bad quality of the scanner shows up in the irregular density and color variation across the frame.
Philipp Salzgeber released the pictures under CC-BY-SA-2.0-AT, see bottom of
http://salzgeber.at/astro/ (and before he also gave me the personal permission at
forum.astronomie.de for GFDL-free usage)
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the
same or compatible license as the original.
Photo of the comet Ikeya-Zhang. The photo was taken using the following equipement:
Camera: Pentax 6x7
Lens: Pentax Takumar 400mm f/4.0
Film: Fuji Provia 400
Exposure: 10min. at f/4
Scan: Umax Astra 1220S with transparency adaptor
Processing: Removing of vignetting and gradient (light pollution); the bad quality of the scanner shows up in the irregular density and color variation across the frame.
Philipp Salzgeber released the pictures under CC-BY-SA-2.0-AT, see bottom of
http://salzgeber.at/astro/ (and before he also gave me the personal permission at
forum.astronomie.de for GFDL-free usage)
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the
same or compatible license as the original.