Quote:
Originally Posted by AG Hybrid
Any 1.25 inch and 2 inch barlows with an adapter.
|
They will all work OK, but some of the cheaper ones will introduce some CA. GSO, Meade, Celestron, Orion, Bintel brand... should all be OK, but to respect the ES optics you might be better off stepping up a bit to an ED version (eg. Bintel 2" ED). The optical chain is only as good as its weakest link. If your pockets are a bit deeper, the Televue 2x is very nice: and I have seen them on the ISS classies.
All the best,
Dean