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Erwin Forbragd

M33 in Triangulum

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Posts Made By: James Robinson

December 31, 2003 05:54 AM Forum: TeleVue

TeleVue 4mm Radian

Posted By James Robinson
Hi,
I have a TV-85 with a 4mm radian and use the combination almost every night. It's interesting seeing the comments that the 3 is too much. At 150x (4mm) the image on Saturn and Jupiter does not appear close to breaking down. I have also been surprised at how great M42 looks with the 4mm. Bottom line -- I think it's a great combination.
Jim

January 2, 2004 03:49 PM Forum: Eyepieces

Ghosting with Expanse EP (6mm)

Posted By James Robinson
Thanks Bob, I will try that. I do suspect the negative element is the main culprit. I used the e.p. without it and the ghosting disappeared. Of course that was also at much lower power.

Jim

January 6, 2004 04:57 AM Forum: Astro Binoculars

Vixen/Orion BT-80's

Posted By James Robinson
Is there any real advantage to binoscopes such as the BT-80 versus, say, a slightly larger refractor with a good binoviewer? Theoretically I can't see any and the refractor binoviewer combination is much easier to mount. The combination including the mount would be much less expensive and arguable better optically.

I'm a big fan of binoculars in general but don't undestand the niche for these large ones that are essentially 2 refractors.

January 11, 2004 12:54 AM Forum: Birding Optics and Photos

Cedar Waxwing

Posted By James Robinson
This is really excellent, what equipment did you use to get this shot?

Jim

April 25, 2004 02:27 AM Forum: Birding Optics and Photos

Mourning Dove

Posted By James Robinson
That's a very nice photo, incredibly sharp. We have nearly identical equipment and I haven't yet achieved such sharp focus. Any pointers or tricks you care to share? My best results so far have been to manually focus with the scope focuser then let the camera autofocus. I do use the timer of course.

Any tips appreciated!

April 25, 2004 08:00 AM Forum: Birding Optics and Photos

Great blue heron feeding

Posted By James Robinson
Thanks for the tip, it makes perfect sense. I used auto mode with default settings for most of these shots, I really need to study the coolpix manual. Also, I realized you need to practice this in advance, all those settings and dials are overwhelming in the field.

May 1, 2004 10:35 PM Forum: Birding Optics and Photos

Common gackle? with shaved head

Posted By James Robinson
Another view.

May 2, 2004 08:26 PM Forum: Birding Optics and Photos

Another red winged blackbird

Posted By James Robinson
Thanks. I keep practicing. These birds are really sharp through the eyepiece. This "river" is right down the street from my house, there are redwings and cackles everywhere. A snowy egret showed up today.

May 8, 2004 09:42 PM Forum: Birding Optics and Photos

American Robin

Posted By James Robinson
Nice photos Jeff. Mind giving your approximate location? Jim

May 11, 2004 04:12 PM Forum: Birding Optics and Photos

Tree swallows

Posted By James Robinson
#2

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