bomberbaz Posted April 25, 2020 Share Posted April 25, 2020 (edited) Hello everyone, I trust you are all keeping well and socially distancing. Ok so here is my question. I have a now discontinued LS35 fitted with a B400 blocking filter. I am enjoying using the 35 but the FOV is incredibly tight which detracts from some of the fun of viewing. SO would changing the filter to a B600 make a significant difference to the fov. I have been trying to get details online to help me figure this out but not having much luck. Cost around £350 for a B600. Up to around £650 for a B1200. ( both are direct from USA wth VAT added, may be slightly more) However at that cost of the B1200 I start thinking maybe another option might be new OTA altogether. Your help is much appreciated. Steve Edited April 25, 2020 by bomberbaz Link to comment Share on other sites More sharing options...
Merlin66 Posted April 26, 2020 Share Posted April 26, 2020 Steve, the LS35 has a focal length of 400mm, hence the choice of the BF400 which allows full viewing of the solar disk. Using a larger BF won't change the view of the solar disk but just allow a wider field around the Sun to be viewed....... A big expense for little gain. 1 Link to comment Share on other sites More sharing options...
Bobby1970 Posted April 26, 2020 Share Posted April 26, 2020 10 hours ago, bomberbaz said: Hello everyone, I trust you are all keeping well and socially distancing. Ok so here is my question. I have a now discontinued LS35 fitted with a B400 blocking filter. I am enjoying using the 35 but the FOV is incredibly tight which detracts from some of the fun of viewing. SO would changing the filter to a B600 make a significant difference to the fov. I have been trying to get details online to help me figure this out but not having much luck. Cost around £350 for a B600. Up to around £650 for a B1200. ( both are direct from USA wth VAT added, may be slightly more) However at that cost of the B1200 I start thinking maybe another option might be new OTA altogether. Your help is much appreciated. Steve There is a LS35 deluxe on ABS, or certainly was yesterday. £400. It will have the B600. Having owned one myself and done a little imaging with it, I suspect you would find the 600 acceptable. Sell yours and buy the one on ABS. Probably the cheapest option. 1 Link to comment Share on other sites More sharing options...
bomberbaz Posted April 26, 2020 Author Share Posted April 26, 2020 1 hour ago, Bobby1970 said: There is a LS35 deluxe on ABS, or certainly was yesterday. £400. It will have the B600. Having owned one myself and done a little imaging with it, I suspect you would find the 600 acceptable. Sell yours and buy the one on ABS. Probably the cheapest option. Sold mate, nevermind, I shall have to wait and put up with the scope as it is until something comes along. TBH it's reasonable at lower mags but when you start to crank it a little is when it gets more challenging. Link to comment Share on other sites More sharing options...
Bobby1970 Posted April 26, 2020 Share Posted April 26, 2020 7 minutes ago, bomberbaz said: Sold mate, nevermind, I shall have to wait and put up with the scope as it is until something comes along. TBH it's reasonable at lower mags but when you start to crank it a little is when it gets more challenging. Oh, that's a shame it has sold. I'm not sure how good the scope will ever be for high mags anyway with such a small aperture. I generally used it for full disks, viewing and imaging. Good luck whatever you decide 👍 Link to comment Share on other sites More sharing options...
tico Posted April 26, 2020 Share Posted April 26, 2020 Really, for the expense involved, is it worth exchanging the B400 for the B600 if it is exclusively for visual?How much more field can we get? 1/2 º?If the L35 has 400mm of focal length, the B400 would allow obtaining 1º of maximum field, right?Usually, what magnification can this solar telescope hold up well?CheersTico. Link to comment Share on other sites More sharing options...
bomberbaz Posted April 26, 2020 Author Share Posted April 26, 2020 I think you are right that it is about 1 degree fov but eye position is very tricky and can be quite frustrating. I think aboutx 30 to 40 is around as high as I have taken it, it might take a little more but as yet I havn't pushed it beyond as mentioned. I did make this post when half way through my 2nd box of golden ales so perhaps wasn't thinking as clearly as now. I think I shall keep my eye on the 2nd hand markets and make do with what I have for now. Link to comment Share on other sites More sharing options...
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