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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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  1. JvdM

    Astroscope + DSLR = Gallery!

    Hi Tord Here are two fairly good tutorials (mainly Registax, which is free and quite good): http://cs.astronomy.com/asy/astro_imaging/f/16/t/48477.aspx http://arstechnica.com/civis/viewtopic.php?f=6&t=1224931 BR Jaco
  2. JvdM

    Astroscope + DSLR = Gallery!

    canon flange distance= 44mm; m4/3=19.25mm. Maybe that will account for your differences Jaco
  3. JvdM

    Astroscope + DSLR = Gallery!

    Those are lovely Tord. Amazing birds. Jaco
  4. JvdM

    Astroscope + DSLR = Gallery!

    Hi Paul, Many happy returns etc. Glad to have you back in full kit (well almost). Jaco
  5. JvdM

    Astroscope + DSLR = Gallery!

    We should share a well-matured Limburger then. Ditto on the flattener. Methinks one will have more success with a low power TN and some extension tubes behind it to vary/control the depth of field. BR
  6. JvdM

    Astroscope + DSLR = Gallery!

    Dan, to my understanding the field flattener counters "field curvature" which does not influence the nature of the bokeh. Anyhow, the amount of field curvature on the 90/600 is really not an issue until you get towards the edges of the image. PS: Those are great shots of the moon. Do you use...
  7. JvdM

    Astroscope + DSLR = Gallery!

    Hi Dan Thanks for the input, when out again I shall look into this. However, the scope does suffer a tiny bit from under corrected spherical aberration (see star test here, 3rd photo from top: http://www.astro-foren.de/showthread.php?10206-TS-Triplet-APO-fast-perfekt). I believe it was...
  8. JvdM

    Astroscope + DSLR = Gallery!

    Here is a good explanation: http://bokehtests.com/styled/index.html Jaco
  9. JvdM

    Astroscope + DSLR = Gallery!

    Luck? Nah, seems like you Oly guys have got this licked now. Focus is spot on and no camera shake, then the result must be good. Good stuff Regards Jaco
  10. JvdM

    Astroscope + DSLR = Gallery!

    Nicely done Tord. You seem to have overcome the front focus problem quite well. It seems the new camera was worth the expense and aggravation. Best regards Jaco
  11. JvdM

    Astroscope + DSLR = Gallery!

    Some more drive-by shooting African Darter and first timers with the scope: Fork-tailed Drongo, Swainson's Spurfowl and Black-shouldered Kite. Jaco
  12. JvdM

    Astroscope + DSLR = Gallery!

    Yes Tord, I know the feeling. I am 56 but my eyes are 89 or something - near sighted and some astigmatism. Went the same way with the glasses thing, but have given up on it. I am now trying various formats/prescriptions of contact lenses in the hope of alleviating the problem somewhat. Also, a...
  13. JvdM

    Astroscope + DSLR = Gallery!

    Thanks Cango, I shall be happier if all my photos are as sharp as yours! Jaco
  14. JvdM

    Astroscope + DSLR = Gallery!

    First time with the scope, these White-fronted Bee eaters kept me entertained for a whole morning. African Stonechat and Sacred Ibis. TSAPO 90/600 Kenko MC4 1.4x; TSAPO 90/600 TN 2x Jaco
  15. JvdM

    Astroscope + DSLR = Gallery!

    Really nice shooting Tord. Are you using some kind of focus assist? Reason I am asking is it appears that you have some front focusing. On the first one it appears that the focus is on the pole with the head just coming into focus behind it. Ditto with the barbed wire, although with the angle...
  16. JvdM

    Astroscope + DSLR = Gallery!

    Thanks Cango, these are from a game reserve near here. There are more species, but, as you are not allowed to get out of the car, one can't get close enough to take worthwhile photos. Rather frustrating at times. Regards Jaco
  17. JvdM

    Astroscope + DSLR = Gallery!

    Hi Guys Some photos taken the last few days. The first two are of the same bird (I think an Hawaiian Duck - can anyone confirm please), then an African Black Duck and Hottentot Teal. Canon Eos 60D, TSAPO 90/600 at 600mm, f/6.7 Thanks Jaco
  18. JvdM

    Astroscope + DSLR = Gallery!

    Some evidence from a drive-by shoot. Canon Eos 60D and TSAPO 90/600 @ 840mm f/9.3 (Kenko DG Pro 300 1.4x)
  19. JvdM

    Astroscope + DSLR = Gallery!

    Went out hoping to shoot some kingfishers today. Only got the one little fella but some other interesting characters showed up though. Canon 60D, TSAPO 90/600 @ 1176mm f/13. Temp about 28 C
  20. JvdM

    Astroscope + DSLR = Gallery!

    Did you actually have him groomed for the shoot? ;)
  21. JvdM

    Astroscope + DSLR = Gallery!

    Hi rf Your scope is a bit of an unknown quantity here. So, rather than comparing to what you see here, do some shots of something stationary with enough contrast and detail in good lighting: Scope, with and without filter and ditto the TC. You can then work from a base (the scope) and then look...
  22. JvdM

    Astroscope + DSLR = Gallery!

    I have never used a "pan-tilt" head, so it will be very presumptuous of me to knock your equipment. I have only used a Manfrotto 393 gymbal with the scope (cheap and it does the job). It can be locked in elevation, but not in azimuth, and it also balances the scope fairly well when you mount the...
  23. JvdM

    Astroscope + DSLR = Gallery!

    Hi Sarah Hint: don't blink ;) Shoot at the highest frame rate your camera can do, bursts of three, refocus and shoot again. Try and focus on high contrast areas (fur, feathers of different colours, silhouette or outline of ears or bills). If lighting is good and the pupils can be clearly seen...
  24. JvdM

    Astroscope + DSLR = Gallery!

    Hi Paul I no longer have the shell as I butchered it beyond repair. It definitely was not an MC7. If I remember correctly it may have had "HQ" inscribed on it. It came in a Pentax K-mount and looked similar to the one at this link: http://www.ffordes.com/product/12092516144681 The only other...
  25. JvdM

    Astroscope + DSLR = Gallery!

    Some photo's from this morning. The Grey lourie is with the scope, hand held from about 8m in my back yard. I was actually quite surprised by the results, as it is not easy to hand hold this beast. The Dikkops were taken out in a field near here, with a bean bag as support and an old DOI 2x TC...
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