qm00 發表於 2008-5-25 21:20:38

Baush & Lomb Telescope (Urgent)

Hi,

Please help.

I have a problem with a Baush & Lomb 'Harbourmaster' Telescope in my office. It was dis-assembly by our guest but he don't know how to re-assembly it. After several hour, we re-assembly the scope but the image is not sharp enough and is unclear. I wonder the image may be reversed.:(

In fact, I don't know how does it happen. Can anyone help to let me know where can I fix the telescope in Hong Kong? How can I find the assembly drawing for it?

Thanks

C.L.Chan 發表於 2008-5-26 10:01:50

回復 1# 的帖子

Why not ask the manufacturer dirtly?
http://www.gunaccessories.com/BauschLomb/Telescopes/Harbormaster.asp
Bausch & Lomb is a famous company, I think they have a good after sell service.

C.L.Chan 發表於 2008-5-26 10:12:43

This page said :

<http://catalog.ebay.com/Bausch-and-Lomb-Harbormaster-68-3576-35-x-76mm-Telescope_W0QQQ5ftrksidZp4295QQ_fclsZ1QQ_pidZ54807454QQ_tabZ1>

The Harbormaster has a serial number engraved on the tube and comes with a certificate of authenticity and Bausch & Lomb's fantastic lifetime warranty.

BillYeung 發表於 2008-5-26 12:11:58

原帖由 C.L.Chan 於 2008-5-26 10:12 發表 http://forum-test.hkas.org.hk/images/common/back.gif


The Harbormaster has a serial number engraved on the tube and comes with a certificate of authenticity and Bausch & Lomb's fantastic lifetime warranty.

Dear CL,

For most companies, once their products were taken apart, it void the warranty.:L

[ 本帖最後由 BillYeung 於 2008-5-26 12:36 編輯 ]

ericng 發表於 2008-5-26 14:14:43

原帖由 qm00 於 2008-5-25 21:20 發表 http://forum.hkas.org.hk/images/common/back.gif
Hi,

Please help.

I have a problem with a Baush & Lomb 'Harbourmaster' Telescope in my office. It was dis-assembly by our guest but he don't know how to re-assembly it. After several hour, we re-asse ...

Can you post some photos to show which model of the telescope it is?

In fact, normally if the image is not sharp, it usually due to misalignment of the optical axis.

Best Regards,

Eric

C.L.Chan 發表於 2008-5-26 16:10:02

回復 4# 的帖子

Dear Bill,
你說得對.這樣只好 DIY 了.我想極都唔明白點解支正像鏡,拆完再安會變左支倒像鏡?

C.L.Chan 發表於 2008-5-27 11:57:01

Optical layout of a refractor

<http://starizona.com/acb/basics/equip_telescopes_refractors.aspx>

C.L.Chan 發表於 2008-5-27 12:22:24

Concave eyepiece get erecting image

<http://electron9.phys.utk.edu/optics421/Laboratories/Lab4.htm>
For most astronomical telescope, a convex lense (凸透鏡) is used as eyepiece.
It get an inverted image (倒像).
For terrestrial telescope, the eyepiece is a concave lense (凹透鏡).
An erecting image (正像) is observed.
The Harbourmaster Telescope is a terrestrial telescope.
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