Abstract: Our program concerns with obtaining image of planetary nebula M97 in B,V,R colours. We are interested about nebula's central star (which is a white dwarf). Colour indexes for the central star could be obtained. From these indexes the temperature of the central star will be determined. Using this value, we will find the approximate luminosity and then by comparing with visual magnitude also the distance to M97.

Full Text of Proposal

Comments by OPC

General Comments: Very good, both scientifically and technically. Highly recommended.

Visibility: Best observed after midnight.

Special Comments: To obtain good photometry for the central star, telescopes with diameter 0.8m and offering pixel size smaller than 1 arcsecond are preferred (OHP, Wendelstein, Teide). Standard stars need to be observed as well.

Expected time consumption (including overhead): About 1 hour.

Proposed facility: Can be done with any telescope in the northern hemisphere during a few hours in a night. Proposed OHP telescope is ideal, but other CCD imaging telescopes with BVR or similar broadband filters are fine too.