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Planetary Images with chromatism

Below are the images of three different doublets and three different triplets as described by Rutten & van Venrooij in table 6.1 and table 21.1 of their book “Telescope Optics”.

All the calculations of the wavefront maps were made in ATMOS or MODAS.

8 inch aperture

Fraunhofer BK7/F3 Doublet
f/15 - 200mm

Fraunhofer FK51/KzFSN2
Doublet
f/10-  200 mm

Steinheil LaK10/Fluorite Doublet
f/8- 200mm

Triplet
BK7/KzFS1/
BaFN10

f10 - 200mm

Airspaced Triplet BK7/KzFS1/
BaFN10
f10 - 200mm
 

Airspaced Triplet BK7/KzFS1/
TiF2
f10 - 200mm
 
Picture

This image of Jupiter was shot by Rafael Barberá with a Helios 102mm (f5) achromatic refractor from Valencia, Spain.

http://usuarios.tripod.es/rbarbera/
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