Instrumente Astronomice - Binocluri Markus - ATM Telescopes (Germania)

Instrumente Astronomice
Un ghid al incepatorului
Update sectiunea "Binocluri - cat costa si de unde pot fi cumparate"

Emil Neata, 30 martie 2003
Actualizat 5 apr 2003 (Ovidiu Vaduvescu)


ATM Telescopes (Germania)
Website (mai mult in germana): http://www.apm-telescopes.de
Contact: Markus Ludes, email: [email protected]
Adresa: APM-Telescopes, Goebenstrasse 35, Saarbrücken, D 66117 Germany. Phone: +49-681-9541161

Urmatoarele 3 anunturi au fost postate pe www.astromart.com la sfarsitul lunii martie 2003.
Le includem integral aici pt ca probabil pe astromart expira in curand:

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http://www.astromart.com/viewad.asp?cid=182263

For Sale: New APM Binoculars 70 mm and 80 mm
Placed by APM-Telescopes(http://www.apm-telescopes.de) on 3/29/2003 (Expires 4/8/2003)
Goebenstrasse 35
Saarbrücken, D 66117 Germany
Phone: +49-681-9541161
Email: [email protected]
This ad has received 316 hits.

and here the last 3 versions of our new line multicoated binoculars with BAK 4 prisms
- 15 x 70 , central focusing, field of vieww 231 ft on 77yrds, 18.2 mm eyerelief, weight 3.2 pound, rubberamored Price incl. shipping US $ 119
- 20 x 70 , central focusing, field of vieww 174 ft on 58 yrds, 12 mm eyerelief, weight 3.2 pound, rubberamored Price incl. shipping US $ 119
- 20 x 80 , central focusing, field of vieww 189 ft on 63 yrds, 13.2 mm eyerelief, weight 3.5 pound, rubberamored Price incl. shipping US $ 139

Markus Ludes

Anuntul include si urmatoarea imagine.

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http://www.astromart.com/viewad.asp?cid=182260

For Sale: New APM Binocular 20 x 80
Placed by APM-Telescopes(http://www.apm-telescopes.de) on 3/29/2003 (Expires 4/8/2003)
Goebenstrasse 35
Saarbrücken, D 66117 Germany
Phone: +49-681-9541161
Email: [email protected]
This ad has received 242 hits.

the next new Binocular in our line is a 20 x 80 multicoated version with Bak4 prisms , multicoating, individual eyepiecefocusing, waterproofed, field of view is 157 ft on 52 yards , and 15.4 mm eyerelief with a weight of 5.2 pound.

Our price include shipping US $ 239

Anuntul include si urmatoarea imagine.

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http://www.astromart.com/viewad.asp?cid=182259

For Sale: New APM 25 x 100 Binocular
Placed by APM-Telescopes(http://www.apm-telescopes.de) on 3/29/2003 (Expires 4/8/2003)
Goebenstrasse 35
Saarbrücken, D 66117 Germany
Phone: +49-681-9541161
Email: [email protected]
This ad has received 459 hits.

here we start to offer our new line of multicoated binoculars, made in Asia. First run arrived and surprissed us with the excellent quality they offer for that low value
The Top Modell is the new 25 x 100 straight view modell with central phototripod holder and individual eyepiecefocusing. Its waterproofed offers a Field of view of 157ft on 52 yards, a exit pupille of 4 mm diameter, a eyerelief of 15.44 mm , but also a weight of 10.3 pound. It is using BaK4 prisms.

Our price include shipping is US $ 279
delivery from stock

Markus Ludes

Anuntul include si urmatoarea imagine.

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Comentariu Ovidiu:
Ulterior am avut cu Markus vreo 3 schimburi de emailuri, mi-a raspuns prompt de fiecare data. Mai adaug aici urmatoarele:

- binoclurile sunt made in China;

- toate au surub incorporat de atasare pe ttrepied (dar un L-adaptor trebuie cumparat separat - costa probabil vreo 10$);

- cele 3 mai ieftine (primul anunt) au "cenntral focusing"; desi nu stiu exact care-i diferenta fata de "individual eyepiecefocusing" (anunturile 2 si 3) toate 3 din cele mai ieftine sunt prevazute cu focus separat la ochiul drept (plus focus central);

- campul (field of view = FOV) dat acolo assa complicat in ft (1 ft = 0.3048m) sau yards (1 yd = 0.9144m) reprezinta numarul de ft (sau yd) subintins de campul binoclului la distanta de 1000m. Deci daca ne imaginam un triunghi isoscel orizontal alungit (cu varful in binoclu), aplicand tan dupa ce a fost bisectat, obtinem (de ex pt anuntul 2, binoclul 20x80 "field of view is 157 ft on 52 yards" obtinem mai intai (luand una din cele doua, de ex 52 yards = 47.5488m subintinsi in camp la distanta de 1000m, deci jumatate va fi 47.5488/2 = 23.7744 deci tan (camp/2) = 23.7744/1000 deci camp/2 = arctan(0.0237744) = 1.3619 grade, deci campul = 2.7 grade.

- pupila de iesire se calculeaza impartit ddiam in mm la grosisment (deci 20x80 ar da o pupila de 4mm suficient de buna dar 20x70 ar da 3.5, deci ceva mai neluminos pt astronomie).

- preturile acolo includ si posta (acceasi si pt Romania) - deci ar mai ramane problema/necunoscuta vamii..

- Markus a fost recomandat si de Alin.
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