Secondary Mirror Screws

[Barry-W-Fenner]

Morning all,

Can anyone tell me the gauge of the thumb screws that collimate the secondary mirror in both the 200 & 300p please.

I know they are 35mm long and think they are M4

Regards

baz

[Guest]

29 minutes ago, Barry-W-Fenner said:

Morning all,

Can anyone tell me the gauge of the thumb screws that collimate the secondary mirror in both the 200 & 300p please.

I know they are 35mm long and think they are M4

Regards

baz

Have you misplaced them or threaded them?😱

[banjaxed]

1 hour ago, Barry-W-Fenner said:

Morning all,

Can anyone tell me the gauge of the thumb screws that collimate the secondary mirror in both the 200 & 300p please.

I know they are 35mm long and think they are M4

Regards

baz

Yes they are M4.

[Barry-W-Fenner]

57 minutes ago, merlin100 said:

Have you misplaced them or threaded them?😱

Nope, just wanted to buy some for my 200p as I put the bobs knobs in my 300p. I will source some M4x35 from fleebay 😁

[Dr_Ju_ju]

to stop any issues with corrosion, I'd recommend getting some A4 Stainless Steel screws\bolts e.g. https://www.ebay.co.uk/itm/M4-4mm-CAP-SCREWS-HEX-SOCKET-ALLEN-KEY-BOLTS-A4-MARINE-GRADE-STAINLESS-STEEL/360675943888