Robindonne Posted July 16, 2020 Share Posted July 16, 2020 Hello fellow umbrella gazers. I have a question about a set i probably going to pick up this weekend. Im really very inexperienced so i dont exactly know what these eyepieces are. It looks like a series 5000 to me. But is it a model thats rated well or is it from a bad series. It has the 20, 14, 9 and 5,5 mm in it. Im really curious how these are rated by veterans. Link to comment Share on other sites More sharing options...
John Posted July 16, 2020 Share Posted July 16, 2020 They are Series 5000 plossls. I have owned a couple of them. They are fairly average performers I thought. The Meade HD60's (below) are much better: 1 Link to comment Share on other sites More sharing options...
Robindonne Posted July 16, 2020 Author Share Posted July 16, 2020 Hm ok thx. Do you mean they underperform compared to a more common plössl? One from the green 4000 series for example. Iwill check the state they’re in before i pick them up. Very much thx. You might have been one of the veterans i hoped to hear from😅 Link to comment Share on other sites More sharing options...
John Posted July 16, 2020 Share Posted July 16, 2020 I seem to recall that they perform about as well as the Meade 4000's and 3000's but have a flashier body. They pushed the field of view out to 60 degrees but the design didn't really handle that well so the edge correction is lacking. If your scope is F/8 or slower they should be OK. The HD60's were a different optical design and handled the 60 degree field somewhat better. 1 Link to comment Share on other sites More sharing options...
Louis D Posted July 17, 2020 Share Posted July 17, 2020 They are 5 element, 60 degree, positive only eyepieces except for the 5.5mm which has 6 elements and might be negative-positive design. They are very sharp in the inner 50% (30 degrees) and then get progressively worse to the edge in sub-f/6 scopes. It's been rumored that they were resurrected as the ES-62 line of eyepieces since all the focal lengths match up. 1 Link to comment Share on other sites More sharing options...
Robindonne Posted July 17, 2020 Author Share Posted July 17, 2020 Oke. Well they might work then. They are for a young girl traveling with her mak. So not really a fast scope. Thx for the information and opinions. Link to comment Share on other sites More sharing options...
John Posted July 17, 2020 Share Posted July 17, 2020 1 hour ago, Robindonne said: Oke. Well they might work then. They are for a young girl traveling with her mak. So not really a fast scope. Thx for the information and opinions. For a Mak they should be fine. I recently bought a low cost 25mm eyepiece as a travel eyepiece for my F/14 90mm mak and it is really sharp right across the field in that scope. I doubt it would do well in my F/5.3 dob but thats not the scope it will be used with. 1 Link to comment Share on other sites More sharing options...
Louis D Posted July 17, 2020 Share Posted July 17, 2020 Here's how the Meade 5000 Plossl 40mm looks in a field flattened AT72ED f/6 refractor (top) and in a Synta (Orion/Celestron) 127mm f/12 Mak (bottom). The difference in scale is due to the difference in focal lengths between the two scopes. However, it's pretty clear that at f/6, things get ugly toward the edge, but at f/12, it looks pretty nice. You may need to select and expand the f/6 version to see the details. 1 Link to comment Share on other sites More sharing options...
Robindonne Posted July 18, 2020 Author Share Posted July 18, 2020 Cancelled it. It was part of a etx-90 deal. But the scope had some damage. Plus the average rated eyepieces made me decide to skip this one. Thx for all the help and opinions Link to comment Share on other sites More sharing options...
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