Astrophotography in Urban Environment

Location: San Bruno, CA

Telescope: Stellarvue SVR 90T with Stellarvue Field flattener  on Takahashi NJP-Z Mount

Camera: Qhy9 CCD with Astronomik H-Alpha 12nm Filter and O-III 12nm Filter

The color picture is a “HOO” Narrowband picture:

• H-Alpha: red channel – 16 exposures of 480secs.
• O-III:   green and blue channel – 21 exposures of 480 secs.

On the left, the H-Alpha image, on the right the HOO composite image. Note the Monkey nebula emits mainly in H-Alpha only the central parts of the nebula glows in the OIII band.