Quick question - which of these 4 to pair with an ASI120mm mini camera for guiding on a 6” GSO F6 Newtonian. The last two seem kind of heavy but look like good double duty to replace the stock finder scope.
1. ZWO 30F4
https://www.bintel.com.au/product/zw...v=6cc98ba2045f
2. ZWO 60280
https://www.bintel.com.au/product/zw...v=6cc98ba2045f
3. Orion mini 50mm
https://www.bintel.com.au/product/or...v=6cc98ba2045f
4. Skywatcher 80mm x 400mm achromatic
https://www.bintel.com.au/product/sk...v=6cc98ba2045f
Thanks.
Russell.