SingAstro

2inch eyepiece, in like new condition. Seldomly used.

$85

Beautifully machined desiccant cap for any telescope with a 2 inch barrel. Perfect for removing moisture from the inside of your refractor or other closed tube telescope. Includes rubber O ring and rubber cap. Does not include desiccant. I got a few available, for limited time only. $70 IMG_20240522...

Hello, I have for sale a Stellarvue MC002C Mount which is in an excellent condition. I used it for visual obs previously, but I have since upgraded. Included in the sale are the following: - Mount handle - Mount steel column. No tripod included. If you need one, I recommend using Innorel RT90C with ...

For a big Sunspot like 3664, I prefer white light..hehe.

I saw the giant sunspot yesterday through a pair of binoculars. Very impressive. Haven't had a chance to observe in H-alpha yet.

Do you have your own design? If so, you can try a local printing shop to save on shipping.

Another way is to use a parcel forwarding service like Vpost

For sale is one of the latest strain wave mounts from iOptron, specifically the HAZ31, which has a carrying capacity of 15 kg while it weights less than 4 kg! As you can see from the pics below, it is very very compact. I have been using it as a travel/visual-only mount. It has travelled with me to ...

You can try using a Barlow or Baader OPCs, available in 1.25X, 1.7X, and 2.5X.

Well, the mirror alone probably costs $20k. Then, all the custom parts that have to be machined, another $10k. The scope looks to have tracking capability, so another few thousands dollar there. In total, probably between $30k-$40k. The good news is you would only need to sacrifice only one of your ...

Sorry, off topic. I'm just curious about the wave equations in the background..hah