[ATM] 6 inch mirror blank

[vladimir sacek]

tom bouthillier wrote:

 > I've managed to get a 6 inch piece of SK15 from an old aerial camera that 
will work as a corrector for gregory maksutov. I'm attaching the OLSO file 
if anyone is interested. <

I can't get working design with those numbers; it looks like Rumak, with
the secondary farther away from the primary than the corrector.

Here's what 6" f/15 Mak-Gregory with 14mm thick SK15 corrector and
1013mm primary radius would look like.

 SRF      RADIUS      THICKNESS   APERTURE RADIUS       GLASS  SPE  NOTE
 OBJ       --        1.0000e+20    8.7269e+17             AIR

 SRF      RADIUS      THICKNESS   APERTURE RADIUS       GLASS  SPE  NOTE
 OBJ       --        1.0000e+20    8.7269e+17             AIR

 AST  -224.000000     14.000000     76.000000 AS         SK15 C
  2   -232.980000    399.000000     77.903069 S           AIR

  3   -1.0128e+03   -399.000000     82.610364 S       REFLECT

  4   -302.000000    544.000000     22.227740 S       REFLECT

 IMS  -311.000000      0.488351     19.978282 S

Vla