Abstract: The main target object is a small reflection nebula, namely RNO 37, which contains two known H-alpha emission stars. This cloud may contain more faint stars or even a small cluster. CCD images of the cloud with H-alpha, R,V,B filters may reveal other stars in the cloud. For the photometric calibration we need a few short time exposure on a nearby known reference star.

Full Text of Proposal

Comments by OPC

General Comments: Feasible and with possibility of interesting results.

Visibility: The region is well visible most of the night.

Special Comments:The calibration of H-alpha exposures may be difficult, although interesting results can be obtained from easy-to-obtain quantities like the relative (uncalibrated) H-alpha / R ratio. Cosmic rays would be a problem given the very long exposures required in H-alpha; it is strongly recommended to divide the H-alpha exposure, and possible the B exposure too, in shorter exposures to be combined afterwards.

Expected time consumption (including overhead): About 3 hours.

Proposed facility:Although the required size of the field is not specified in the proposal, that of the IAC 80 telescope seems appropriate. The H-alpha filter is available there.