dweller25 Posted Wednesday at 17:58 Share Posted Wednesday at 17:58 (edited) As I am getting OWS (observing withdrawal symptoms) I decided to compare the views through the Takahashi 100mm F/8 Fluorite doublet and the Kenko 76mm F/16.4 Achromat at x150 on a distant roof chimney and aerial. The views through the Tak were slightly brighter, slightly sharper and had slightly more contrast. BUT the purchase price difference is enormous ! I do suspect the Kenko would give a 76mm Tak a very close run for the money. However I suspect the Takβs would give less image breakdown at higher powers compared to the Kenko. These old school long focal ratio scopes are great π Β Β Edited 3 hours ago by dweller25 3 Link to comment Share on other sites More sharing options...
Alan White Posted Wednesday at 20:07 Share Posted Wednesday at 20:07 It really must be cloudy. Interesting outcome, shows how slight increments can be a tad expensive. 1 Link to comment Share on other sites More sharing options...
JeremyS Posted Wednesday at 20:21 Share Posted Wednesday at 20:21 Does the Kenko put up coffee coloured images? π€ 5 Link to comment Share on other sites More sharing options...
dweller25 Posted Thursday at 12:32 Author Share Posted Thursday at 12:32 (edited) 16 hours ago, Alan White said: Interesting outcome, shows how slight increments can be a tad expensive. Yes, but also the modern 76mm telescopes are around half the length of the Kenko, so you pay for that too. Edited Thursday at 12:33 by dweller25 Link to comment Share on other sites More sharing options...
Alan White Posted Thursday at 12:41 Share Posted Thursday at 12:41 8 minutes ago, dweller25 said: Yes, but also the modern 76mm telescopes are around half the length of the Kenko, so you pay for that too. Indeed, you pay more for less π Β Link to comment Share on other sites More sharing options...
Emperor!Takahashi! Posted 3 hours ago Share Posted 3 hours ago I'm glad I went with the Tak. I get disappointed when roof chimneys lack even a little contrast or sharpness. 1 Link to comment Share on other sites More sharing options...
dweller25 Posted 3 hours ago Author Share Posted 3 hours ago 39 minutes ago, Emperor!Takahashi! said: I'm glad I went with the Tak. I get disappointed when roof chimneys lack even a little contrast or sharpness. You are missing the pointing π 1 Link to comment Share on other sites More sharing options...
Emperor!Takahashi! Posted 1 hour ago Share Posted 1 hour ago 1 hour ago, dweller25 said: You are missing the pointing π I was just being intentionally obtuse. That aside, I agree that the long-focus refractors can be wonderful observing instruments. I think older long-focus reflectors are also undervalued these days. It's nice when such instruments are rediscovered by those who can appreciate them. Link to comment Share on other sites More sharing options...
TiffsAndAstro Posted 1 hour ago Share Posted 1 hour ago 1 hour ago, dweller25 said: You are missing the pointing π thankfully there's mortar observing than making bad jokes.Β 1 2 Link to comment Share on other sites More sharing options...
dweller25 Posted 25 minutes ago Author Share Posted 25 minutes ago (edited) 1 hour ago, Emperor!Takahashi! said: I was just being intentionally obtuse. That aside, I agree that the long-focus refractors can be wonderful observing instruments. I think older long-focus reflectors are also undervalued these days. It's nice when such instruments are rediscovered by those who can appreciate them. Oh dear, you missed the (admittedly bad) joke ! Chimneys β Pointing π Β Edited 20 minutes ago by dweller25 1 Link to comment Share on other sites More sharing options...
Emperor!Takahashi! Posted 1 minute ago Share Posted 1 minute ago 22 minutes ago, dweller25 said: Oh dear, you missed the (admittedly bad) joke ! Chimneys β Pointing π Β I admit that your chimney joke flue right over my head. π Link to comment Share on other sites More sharing options...
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