#1  
Old 19-10-2013, 12:13 PM
Rogering (Stuart)
Registered User

Rogering is offline
 
Join Date: Nov 2012
Location: Blaxland NSW
Posts: 24
First Light DBK21au04.as & Focal reducer

Hi guys,
Had my first light with the DBK21au04 (on the GSO Newtonian 10" (250mm) F5, Focal length: 1250mm) doing the Moon & Jupiter.
It seems that Sony chip has the equivalent focal length of 4.5mm wow!
I set about reading about how to make the image larger for the Moon + Sun and read that a Focal reducer was the solution.
I bought the GSO version stuck it on the nose cone of the cam and nothing much happened could not bring the moon or sun into sharp focus........... I tried all sorts of combinations that I could think of, removing nose cone & connecting closer to the chip & also moved my mirror up the tube etc... because the supplier states:
"Focal reducer without extension tube requires ~10mm in travel to reach focus.
"Focal reducer with 25mm extension tube requires ~35mm in travel to reach focus"

Guys am I missing something here, how can I get this focal reducer working?

Last edited by Rogering; 19-10-2013 at 02:18 PM.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 12:39 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
SkyWatcher Australia
Advertisement
NexDome Observatories
Advertisement
OzScopes Authorised Dealer
Advertisement
Meade Australia
Advertisement
Celestron Australia
Advertisement
Lunatico Astronomical
Advertisement
Bintel
Advertisement
Astronomy and Electronics Centre
Advertisement