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Search: Posts Made By: jring
Forum: Kowa Today, 13:17
Replies: 16
Views: 358
Posted By jring
Hi, yeah, that's correct, but since the Kowa...

Hi,

yeah, that's correct, but since the Kowa spotter it was designed for is a fairly fast refractor at f5.5, it should be fine with slow scopes like Mak, SCT or my 100 ED, reasonably fast reflectors...
Forum: Spotting Scopes & tripod/heads Yesterday, 20:54
Replies: 2
Views: 102
Posted By jring
Hi, if the two options are new scopes, I agree...

Hi,

if the two options are new scopes, I agree that with some patience and luck some nicer used piece might be found.
Btw. what is your budget - I have only found 400 quid for the Prostaff and zoom...
Forum: Kowa Yesterday, 20:25
Replies: 16
Views: 358
Posted By jring
I can bring a small astro scope and mount too to...

I can bring a small astro scope and mount too to test... SW 100 ED maybe?

Joachim
Forum: Kowa Yesterday, 12:21
Replies: 16
Views: 358
Posted By jring
Hi, no worries, this way I can learn from sb...

Hi,

no worries, this way I can learn from sb with way more experience than me... so far my endeavours with openscad and my 3d printer are limited to lens caps and solar filter holders...

I could...
Forum: Zeiss Sunday 19th August 2018, 17:23
Replies: 62
Views: 4,181
Posted By jring
Hi, while a larger Kowa Prominar would certainly...

Hi,

while a larger Kowa Prominar would certainly be nice, the story about Kowa growing CaF2 crystal is not true...

Kowa gets finished CaF2 lenses from Canon Optron, just like almost everybody else...
Forum: Kowa Sunday 19th August 2018, 12:46
Replies: 16
Views: 358
Posted By jring
Hi, thanks Jerry, I knew I had seen this Leica...

Hi,

thanks Jerry, I knew I had seen this Leica adapter somewhere in germany when I read sb had used it for the...
Forum: Binoculars Saturday 18th August 2018, 18:55
Replies: 19
Views: 509
Posted By jring
Hi, welcome to birdforum, first of all. The...

Hi,

welcome to birdforum, first of all.

The best pair of binoculars is the one you have with you, when there is a good view to be had.

If a small and light pair of 8x30 is not portable enough,...
Forum: Kowa Friday 17th August 2018, 13:20
Replies: 16
Views: 358
Posted By jring
Hi, if you can read german, the following might...

Hi,

if you can read german, the following might be helpful.

http://forum.astronomie.de/phpapps/ubbthreads/ubbthreads.php/topics/1148568/Re:_Okular-Adapter_f%C3%BCr_Kowa-Ok

Joachim
Forum: Tripod and Heads Thursday 16th August 2018, 11:02
Replies: 3
Sticky: A Tripod Primer
Views: 173
Posted By jring
Hi, nice write up - I don't have anything...

Hi,

nice write up - I don't have anything significant to add - thank you John!

Could we get this thread stuck to the front of this subforum maybe as guidance for new arrivals?

Joachim
Forum: Binoculars Wednesday 15th August 2018, 10:54
Replies: 7
Views: 526
Posted By jring
Hi, I would probably take the Optocron Discovery...

Hi,

I would probably take the Optocron Discovery in that case... reviews read ok, ER is good and its weight and size (or rather the lack of) will surely be appreciated.

Joachim
Forum: Vortex Tuesday 14th August 2018, 13:35
Replies: 23
Views: 618
Posted By jring
Hi, I'm with Bill betting on droplets or flakes...

Hi,

I'm with Bill betting on droplets or flakes of whatever on the field lens - visible bubbles in glass are rare nowadays and for them to be in focus they would have to be at a specific position in...
Forum: Spotting Scopes & tripod/heads Tuesday 14th August 2018, 06:01
Replies: 5
Views: 580
Posted By jring
Hi, welcome to BF, first of all! It is...

Hi,

welcome to BF, first of all!

It is certainly a very fast instrument at f3.6 and with a focal length of 200mm which is quite ambitious with a small ED doublet - I would not try this beyond 40x...
Forum: Binoculars Tuesday 7th August 2018, 14:13
Replies: 8
Views: 419
Posted By jring
Hi, the longest M12 objective I found in my...

Hi,

the longest M12 objective I found in my parts chest was 16mm which yields a TFOV of 22 deg - 2 or 3 times the focal length would be better to match a pair of bins of course.

I'll have to check...
Forum: Tripod and Heads Monday 6th August 2018, 19:31
Replies: 7
Views: 337
Posted By jring
Hi, well my Velbon legs at max height with...

Hi,

well my Velbon legs at max height with column extended are 64" up to the head connection plate which results into an eyepiece height of 59" for my TSN3 close to zenith - certainly no fun for me...
Forum: Others Monday 6th August 2018, 18:54
Replies: 4
Views: 243
Posted By jring
Hi, I think we can rule out contemporary Zeiss...

Hi,

I think we can rule out contemporary Zeiss style bins due to the ergonomic form of the prism housing (see left ring finger in the first image).

This one shows the form of the prism housings...
Forum: Tripod and Heads Monday 6th August 2018, 18:45
Replies: 7
Views: 337
Posted By jring
Hi, I can't really comment on the three tripods...

Hi,

I can't really comment on the three tripods mentioned as I don't know any of them. From the specs all look very capable with their 20kg+ max load - in my opinion they're slightly over the top...
Forum: Binoculars Monday 6th August 2018, 13:08
Replies: 12
Views: 688
Posted By jring
Hi, for astro use, I would still try the 10x50...

Hi,

for astro use, I would still try the 10x50 porro - after all you need to focus only once to infinity there and the unabiliy to reach the center focus is probably what a user with small hands...
Forum: Binoculars Friday 3rd August 2018, 11:26
Replies: 8
Views: 419
Posted By jring
Hi Henning, what about making your own action...

Hi Henning,

what about making your own action cam?

See https://learn.adafruit.com/raspberry-pi-wearable-time-lapse-camera/overview

The raspi cam can be modified by removing the lens and adding an...
Forum: Opticron Friday 3rd August 2018, 11:05
Replies: 44
Views: 20,384
Posted By jring
Hi, I would expect the connection to be...

Hi,

I would expect the connection to be waterproof with the union nut tight. Also the body is usually sealed on its own. I have not tried it though.

Joachim
Forum: Leica Saturday 28th July 2018, 00:28
Replies: 34
Views: 1,637
Posted By jring
Hi, Leica does not melt optical glass - neither...

Hi,

Leica does not melt optical glass - neither does Zeiss btw, although Zeiss belongs to the Carl Zeiss Foundation which also owns Schott - and those guys actually make optical glass.

Regarding...
Forum: Spotting Scopes & tripod/heads Friday 27th July 2018, 10:21
Replies: 12
Views: 521
Posted By jring
Hi, haven't found any reviews for the 501 yet...

Hi,

haven't found any reviews for the 501 yet and I just had some quick looks through it at a show - not really enough for a review.

But the big difference is that the 601 comes with a 20-60 zoom...
Forum: Spotting Scopes & tripod/heads Friday 27th July 2018, 10:17
Replies: 3
Views: 345
Posted By jring
Hi, welcome to BF, first of all! In your...

Hi,

welcome to BF, first of all!

In your situation I would wait and keep an eye on the classifieds (local and in here) if a good used example gets available some place you can get it in person. And...
Forum: Zeiss Wednesday 25th July 2018, 07:59
Replies: 220
Views: 47,116
Posted By jring
Hi, comparing at birdfair is fine - just try to...

Hi,

comparing at birdfair is fine - just try to buy a scope you have looked through before as example variation does happen even with the best! Bonus points if you can get the hand picked demo unit...
Forum: Binoculars Tuesday 24th July 2018, 20:40
Replies: 8
Views: 626
Posted By jring
Wide angle bins recommended!

Wide angle bins recommended!
Forum: Others Tuesday 24th July 2018, 19:37
Replies: 3
Views: 549
Posted By jring
Hi Tim & Steve, first of all, welcome to BF! I...

Hi Tim & Steve,

first of all, welcome to BF!

I can't really comment on those bins as I don't know them - though the available reviews are quite rave...

Regarding phase coating or not - this can...
Showing results 1 to 25 of 1000
 


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