CYCK Secondary spider GSO

[soft salmon]

Does anyone know if this cyck spider thats made for skywatcher newtonians also fits GSO ones, without modifying the holes in the tube?

[blazing cloak]

I don’t have gso newt, but I do have a stellalyra which is basically a copy of the gso. All the holes line up for the 8” f/4 model on the tube. For the secondary the screws are closer together but still work. The hole on the center needs to be enlarged a little to fit the stock screw.

The outside diameter of the spider is too big though. I had to shave it down a lot to get it to fit. It was not easy without a lathe, it literally took me hours of grinding it down with a power drill and a file

[soft salmon]

damn thank you

so cyck is the only cnc spider available? arent out there any gso compatible ones

[blazing cloak]

no problem, there's a couple made by starizona or backyard universe, i think they're the same ones as the pictures they used are the same

150mm aperture:
https://starizona.com/products/secondary-spider-ts150-cnc-machined-metal-tube-id175mm

200mm aperture:
https://starizona.com/products/backyard-universe-secondary-mirror-spider-ts200-cnc-machined

they're much more expensive though as that's why i decided to modify the cyck one lol

[soft salmon]

Thanks alot!

[soft salmon]

well cyck one is like 58€ for me

starizona one tho

169

brub

i wonder why its alot more expensive than skywatcher one

its like 100€ more expensive

[soft salmon]

i cannot find it in Eu stores

should have gotten a skywatcher 6 inch newt instead of a gso

[blazing cloak]

Ah yea I really wish cyck made one for gso newts, I don’t know why the others are so much more expensive lol

[blazing cloak]

The starizona/backyard universe or cyck?

I got the cyck one on eBay for $60 usd

[soft salmon]

backyard and starizona

[soft salmon]

yeah thats for skywatcher only and its the only one available

[soft salmon]

Yeah

Isnt gso supposed to have better mirrors

imma stick with the default spider for a while

This was my first light with the scope

If u zoom in stars look very weird

pinched optics or bad collimation?

[blazing cloak]

First light optics has a secondary spider for gso

https://www.firstlightoptics.com/misc/backyard-universe-secondary-spider-for-gsostellalyrats-150mm-newtonian.html

[blazing cloak]

Yea that’s what I’ve read online, so far the optics have seemed pretty decent on my stellalyra

[blazing cloak]

I noice on the edges of the frame the stars sort of turn into a coma shape, are you using a coma corrector?

Also for clean spikes, you would need a primary mirror mask to cover the clips holding the mirror

[soft salmon]

Oh yea not using one yet im waiting for it to arrive

Ik that

[blazing cloak]

I’ve also noticed collimation cause strange spikes to occur so I would check that as well

[blazing cloak]

Ah

[soft salmon]

yep i hope those arent that hard to find

[blazing cloak]

I think first light optics has one

[soft salmon]

Nice

Is flo in the states or eu?

[blazing cloak]

Eu

[soft salmon]

Nice

With shipping and converted to eur the spider would cost me 189€

While the skywatcher one on ebay its 58€

Dang

[soft salmon]

any clue on what that could possibily be?

[blazing cloak]

Dang yea it’s still expensive, honestly the stock spider is still not too bad, with my 150pds when I installed just a primary mirror mask it still gave me some really nice clean spikes

[blazing cloak]

Looks like coma and collimation is off, one side seems to have more coma then the other which tells me that collimation is probably off

Could also be tilt, but most likely tilt in the mirrors

[soft salmon]

Imma stick with it for now, maybe i could check on the mirror mask

[soft salmon]

damn

gotta wait for my corrector to see

[blazing cloak]

Yea, I feel it’s probably just collimation though

[soft salmon]

Also on this night i forgot to check collimation

[blazing cloak]

Ah, yea I would check that for sure

[soft salmon]

mine doesnt hold pretty well even after a day it would shift

[soft salmon]

Good to know thank you

[blazing cloak]

Also the primary mirror mask is usually way cheaper than the secondary spider

[soft salmon]

Has to be gso compatible or can be universal ?

[blazing cloak]

Damn, I have that issue as well with my stellalyra

[blazing cloak]

I’m not sure but they have a gso version

[soft salmon]

I saw a guy saying just check collimation every 1 - 2 months lol

[soft salmon]

Ill have a look thank you sm

[blazing cloak]

Haha, I wish

[blazing cloak]

No problem

Ah I just checked first light optics, I think they only have it for the 200mm, deepskydad makes some though, I believe it’s also in the eu as they are selling in €, looks like you would have to measure your mirror clips though

[soft salmon]

Yep ive seen too

But luckly

Ive found a guy who shared a 3d print project about a primary mirror mask

For a 6" gso newtonian

Its the same as mine but his is F4

Mine is F5

Hope it fits printing these parts wouldnt cost as much as the flo mask

He also made the clips thinner

On the comments a guy has it and works perfectly so

[blazing cloak]

Oh nice, that seems like a great option

[soft salmon]

Yea and its pretty thin so i wont lose as much aperture

Cuiv said you lose 1% of aperture when using the primary mask

But that one is pretty thin

Look good

[blazing cloak]

oh wow that’s a lot less than I thought, I imagine with that 3d printed one it's even less, damn