Tahahashi X1.6 extender
Takahashi X1.6 extender + Clavé Barlow lens
Takahashi X1.6 extender + Baader FFC

Baader FFC directly at the F/5 focus

Telecentric setup with FFC and C8 focal reducer

F/8 focus : with X1.6 extender - no filter - Pleïades - 9 January 2006

Useful field = 2600 pixels = 23.5 mm diameter

With X1.6 extender + X2 Clave Barlow lens - M44 - 4 May 2006 :

Astrodon blue filter - 21 x 1 s exposure Scale = 1.0 arcsec / pixel Useful field = 1800 pixels = 16 mm diameter

Astrodon L filter - 5 x 1 s exposure Scale = 1.0 arcsec / pixel Useful field = 1900 pixels = 17 mm diameter

With X1.6 extender + Baader FFC - M44 - 11 May 2006 :

Astrodon L - 5 x 1 s exposure

Astrodon blue filter - 11 x 1 s exposure

Baader FFC directly at the F/5 focus - Astrodon L - Gamma Cygni - 9 x 5 s exposure - 18 August 2007 - 1.28 arcsec/pixel

Telecentric setup : Baader FFC directly at the F/5 focus, spacer, C8 focal reducer - Astrodon L - Gamma Cygni - 9 x 5 s exposure - 18 August 2007 - 0.834 arcsec/pixel