Lots of classic astro stuff out there. Scopes, eyepieces, prisms, finders, adapters. The list goes on and on. But then there is the unusual and folks may not know about it. Take the Celestron Williams Dry Ice Cold Camera. Remember that? I was hoping to utilize one of those back in the 80´s. To no avail. It was ridiculous. Total disappointment for a young chap who had spent a years worth of paper route money. Not everything bad, though. Tuthill a harbinger of some pretty well thought and innovative astro gear. Think isostatic mount. Hope this will be fun. So here we go with the first entry, a set of Zeiss filters:
It has taken me a while to get hold of these Zeiss filters. They rarely come up on the bay and I thought it a great idea to watch the Mars opposition in style with the 80´s Zeiss Marsglas. It screws on any Zeiss .0965" eyepiece by unscrewing the universal plastic ring on the top. The orange glas is an OG5. Using it on my Zeiss Telementor, dark surface detail on Mars is visibly enhanced. Most any OG5 filter will do the job at a fraction of the cost. But then these are not Zeiss! Same goes for the two pairs of beautifully machined Zeiss Mondglas hell and Zeiss Mondglas dunkel (moonfilter bright and dark). I tried them both on a half moon and they do a great job. Modern variable polarising filters offering more convenience, though.
I hope this can be a fun thread. So chime in and show us your quirky astro stuff from decades past.