As it turns out I imaged Corona Australis under similar conditions (the TEC was under a 2/3rds moon though)
but weatherwise it was similar, same location, same camera (Apogee U16M), same mount, object was a bit higher in the sky for the TEC. The AP shot was taken 31 May 09 the TEC 26 July 09
Both are short exposures as both were cut short by bad weather but its an interesting exercise to see the same object with 2 of the top refractors in the world.
As you would expect aperture rules and the TEC shows more detail but the AP has a very pleasing and equally sharp wider view.
The processing is much the same and exposure time a little longer with the AP (40 mins Luminance versus 20 for the TEC).
Both are stunning scopes. Both are oiled triplets. The AP is FPL 53 and the TEC is Schott Glass Fluorite as the main element.
http://www.pbase.com/gregbradley/image/115775756 TEC180
http://www.pbase.com/gregbradley/image/115775760 AP140
Greg.
but weatherwise it was similar, same location, same camera (Apogee U16M), same mount, object was a bit higher in the sky for the TEC. The AP shot was taken 31 May 09 the TEC 26 July 09
Both are short exposures as both were cut short by bad weather but its an interesting exercise to see the same object with 2 of the top refractors in the world.
As you would expect aperture rules and the TEC shows more detail but the AP has a very pleasing and equally sharp wider view.
The processing is much the same and exposure time a little longer with the AP (40 mins Luminance versus 20 for the TEC).
Both are stunning scopes. Both are oiled triplets. The AP is FPL 53 and the TEC is Schott Glass Fluorite as the main element.
http://www.pbase.com/gregbradley/image/115775756 TEC180
http://www.pbase.com/gregbradley/image/115775760 AP140
Greg.
