1° Forum di Astronomia Amatoriale Italiano

To do our analysis we do need the following data from you:

an image that shows halos
(Full frame and full resolution monochrome image (no cropping, no reduction in size); dark- and flat corrected (if possible), no further processing!! Please submit as 16bit TIFF, uncompressed 16bit or 32bit integer FITS or RAW file from your camera.)
Which instrument was used?
(Diameter and focal length, type, any secondary optics (reducer, corrector etc..))
Which camera was used?
(Type, size of chip and pixel, number of pixels per axis, manufacturer.)
Which filter was used?
Serial number and size of filter
Date of purchase and purchase reciept (if possible)
Your full address