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IS PROTOSTAR STILL IN BUSINESS or GO DIRECTLY TO ANTARES?

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29 replies to this topic

#26 astrobeast

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    Vostok 1

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Posted 03 October 2019 - 05:10 PM

Does anyone know of another source for 3-vane spiders. All the others I've found are 4-vane.

 

Thanks



#27 elrod

elrod

    Sputnik

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Posted 17 January 2020 - 07:15 PM

Noooooo! Not ever, just Nooooo...........


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#28 MitchAlsup

MitchAlsup

    Skylab

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Posted 17 January 2020 - 09:12 PM

Does anyone know of another source for 3-vane spiders. All the others I've found are 4-vane.

>- 3 vane spiders cannot eliminate the radial rocking vibration that

>-< 4-vane spiders can, but

>< 4 vane spiders cannot either.



#29 danmdak

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Posted 19 January 2020 - 10:36 AM

Just ordered from them maybe 2 months ago. Item delivered less than a week after placing the online order.


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#30 Starman1

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Posted 19 January 2020 - 06:13 PM

Try Antares Optics or Terry Ostahowski for secondary mirrors.


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