Hi,
the first shot with Pentax SDUF II F= 400mm scale: 3,51"/pixel
http://www.danilopivato.com/tabulae_...01_sduf_L.html
The second shot made Flat Field Camera Telescope F= 760mm scale 1,85"/pixel:
http://www.danilopivato.com/tabulae_...101_ffc_L.html
The third shot fact Takahashi BRC250 F= 1268mm scale: 1,1"/pixel:
http://www.danilopivato.com/tabulae_...101_brc_L.html
Detail image, Hires and maps for all.
Kind regards,
Danilo Pivato
www.danilopivato.com