TOA130 Bahtinov mask

[Jfinis (Jim)]

Hi All,
I'm waiting for the arrival of my new toy a Tak TAO130 and I would like to get a Bahtinov mask made by Ozstockman, unfortunately Mike requires the inside diameter of the OTA, I've found what the OD diameters are for the OTA and the DEW shield but I can't find the details for the inside diameters

Can anyone help with the measurements

Very much appreciated

Regards
Jim

[Exfso (Peter)]

Jim, I have a bahtinov mask for my TOA130 it was not made by the same person, but a guy from ASSA it is excellent. Here are the dimensions of mine:
Diameter: 170mm
Diameter of where cutouts start and finish: 130mm. which is obviously the diameter of the objective.
This slots neatly inside the dewshield, I have put a small piece of insulation tape in 4 segments of mine so it will not damage the internals of the dewshield when I insert it.


You are getting a lovely scope, is it new or 2nd hand, also has it the 2.7" or 4" focuser?
Just make sure if it needs work on it, don't send it to anyone other than Takahashi in Japan, unlike my effort when it went to a mob in Sydney and got trashed. It is now good as new again after going back to Japan, a very expensive exercise.!!!!

Cheers

Peter

[Jfinis (Jim)]

Hi Peter,
Many thanks for the dimensions I'll pass them on to Ozstockman (Mike) hopefully he has enough information, he has made quite a few masks for me before and they're excellent.

The TAO130 is new Ordered from AEC, expected to arrive in the first week of March, it's the 2.7" focuser version
I hear great things about the TAK hope I will not be disappointed after spending so much $$$

Regards
Jim