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Forum: Cameras & Imaging Equipment

17-03-2013, 01:08 AM

Replies: 3

[FOR SALE] 12.5" Royce conical + Protostar 2ndry $700 ONO

Views: 1,353

Posted By tempestwizz

I may be interested. Is this still available ?

I may be interested. Is this still available ?

Forum: ATM and DIY Projects

10-03-2013, 10:55 PM

Replies: 23

What type of Welder? stick? mig?

Views: 1,128

Posted By tempestwizz

My main use is for Aluminium. I have built a...

My main use is for Aluminium.
I have built a couple of Dobs so far using aluminium.i tried using a cheaper MIG the first time, and a combination of under power and under-gassing did not allow ideal...

Forum: Astrophotography and Imaging Equipment and Discussions

15-01-2013, 10:36 PM

Replies: 21

Portrait lens?

Views: 801

Posted By tempestwizz

I am a little reluctant to buy into this...

I am a little reluctant to buy into this discussion as my view is not well aligned with the majority.
I agree with the focal lengths, ie 85mm and up to 200 mm for full frame shots. I do not agree...

Forum: Astrophotography and Imaging Equipment and Discussions

01-09-2012, 04:48 PM

Replies: 6

elongated stars again after tests

Views: 362

Posted By tempestwizz

I'd check the direction of elongation also. ie is...

I'd check the direction of elongation also. ie is it in the Dec plane or the RA plane or flexure if in line with guide-scope gravity. That would give a clue what to look for most.
Is the extent of...

Forum: ATM and DIY Projects

09-12-2011, 11:50 PM

Replies: 10

Jupiter Radio Antenna tryout and receiver

Views: 774

Posted By tempestwizz

Do you have any information regarding what...

Do you have any information regarding what frequency(ies) you are looking to detect? There are a couple of ways to improve the antenna type while keeping it compact. Also, the method of coupling the...

Forum: Mobile Astronomy Apps

05-12-2011, 11:59 PM

Replies: 31

IOS 5 problems.

Views: 2,245

Posted By tempestwizz

Not an expert, but I believe Apple acknowledged...

Not an expert, but I believe Apple acknowledged this weakness with first release and have since fixed problem through updates. I have not noticed current issues with my iPhone 4, or iPad2, wires 3GS...

Forum: Software and Computers

20-11-2011, 11:39 AM

Replies: 3

Orion Starshoot problem

Views: 347

Posted By tempestwizz

I'm no expert with Orion Starshhot, but I had a...

I'm no expert with Orion Starshhot, but I had a spate of similar problems some time back which ended up being caused by the Antivirus software. It just wouldn't allow drivers to load, although the...

Forum: Beginners Astrophotography

08-10-2011, 11:18 AM

Replies: 11

A few more beginner shots... how bad is my light pollution?

Views: 696

Posted By tempestwizz

I would strongly recommend the use of a UHC...

I would strongly recommend the use of a UHC filter. I use an Astronomik. Basically I can get twice the (signal) exposure time before the pollution (noise) reaches the same level.
UHC for me works...

Forum: Equipment Discussions

05-10-2011, 10:59 AM

Replies: 34

Takahashi Em200 or Losmandy G11 for ED80 or C11

Views: 1,989

Posted By tempestwizz

I purchased a used EM200 about 5 years ago and...

I purchased a used EM200 about 5 years ago and have to admit that I am less than happy with it. I'm not sure of its history but it doesn't guide anywhere near as well as I had hoped. I may just have...

Forum: General Chat

07-09-2011, 10:08 AM

Replies: 144

What is the meaning behind your avatar?

Views: 4,369

Posted By tempestwizz

Mine is first official light for my self-built...

Mine is first official light for my self-built 12.5" dob near parliament house in 2006.
The name relates to a field of testing that I do, and I'm the only commercial tester in Oz, so I must be a...

Forum: Beginners Equipment Discussions

02-09-2011, 09:29 AM

Replies: 2

0.5x or f6.3 reducer?

Views: 330

Posted By tempestwizz

Basically you are correct in your simplistic...

Basically you are correct in your simplistic assumptions. The purpose of the focal reducers is to increase the available angle of view through a given optic system.
Nothing is ever perfect however,...

Forum: Beginners Astrophotography

01-09-2011, 07:42 AM

Replies: 3

Technical question about f stops

Views: 271

Posted By tempestwizz

Following on from Steffen, stopping down a...

Following on from Steffen, stopping down a terrestrial lens will increase your depth of field making objects nearer and further from the actual focus point also appear to be in-focus. For astro work...

Forum: IceTrade Archives

26-02-2011, 05:21 PM

Replies: 14

[SOLD] **PRICE DROP** IDAS LPS2 72mm Light Pollution Filter

Views: 1,396

Posted By tempestwizz

OK, OK, I'll take it. PM Sent. BC

OK, OK, I'll take it.

PM Sent.

BC

Forum: DIY Observatories

18-02-2011, 10:23 PM

Replies: 15

New observatory advice

Views: 1,664

Posted By tempestwizz

The only advice I can offer in concurrence with...

The only advice I can offer in concurrence with much of the other already given is for the mounting method onto the pier.
I dug a hole almost 1 metre square, and a metre deep. I placed quite a bit...

Forum: IceTrade Archives

19-01-2011, 01:23 PM

Replies: 2

[SOLD] 35mm Panoptic.

Views: 501

Posted By tempestwizz

I find my 35mm Panoptic excellent for my 12" F5...

I find my 35mm Panoptic excellent for my 12" F5 Dob.

Forum: Astrophotography and Imaging Equipment and Discussions

31-12-2010, 04:45 PM

Replies: 17

Canon 5Dii caveot emptor

Views: 973

Posted By tempestwizz

As you can now see, my 'new' dark appears to be...

As you can now see, my 'new' dark appears to be OK. (Feeling a little foolish now)
I could have sworn the lens cap was on when I was taking darks the other night. Obviously I did not have it on...

Forum: Astrophotography and Imaging Equipment and Discussions

31-12-2010, 03:35 PM

Replies: 17

Canon 5Dii caveot emptor

Views: 973

Posted By tempestwizz

Chaps, The second image is what I though should...

Chaps, The second image is what I though should have been a dark. It was fairly stretched though.
I am currently taking more darks as suggested. Inside a dark-bag.
Bert's explanation for the flat...

Forum: Astrophotography and Imaging Equipment and Discussions

31-12-2010, 12:11 AM

Replies: 17

Canon 5Dii caveot emptor

Views: 973

Posted By tempestwizz

The defect became apparent when making darks and...

The defect became apparent when making darks and flats. It appears like a dark bar across the bottom of the image frame.
I'll attach a couple of shots. One is a flat (with stars in it) showing lens...

Forum: Astrophotography and Imaging Equipment and Discussions

30-12-2010, 01:19 AM

Replies: 17

Canon 5Dii caveot emptor

Views: 973

Posted By tempestwizz

Canon 5Dii caveot emptor

Just an advsory note, Bought a Canon 5Dii in Singpore June . On the surface, looked good, but!
Seems to have lmuch ess sensitive area in the lower area of image, as in, a line of lesser...

Forum: Software and Computers

19-11-2010, 09:32 PM

Replies: 21

IC Capture crashing and corrupting video

Views: 1,164

Posted By tempestwizz

Nortons seems to work for me so far with all the...

Nortons seems to work for me so far with all the software I'm running. (SkyX pro,CCDsoft, CCDstack,Envisage,Registax,IC Capture, Iris.)

BC

Forum: Software and Computers

16-11-2010, 08:42 PM

Replies: 21

IC Capture crashing and corrupting video

Views: 1,164

Posted By tempestwizz

I've only just spotted this thread, but I have...

I've only just spotted this thread, but I have had a similar problem with IC Capture, but I have a feeling its actually related to the CA Antivirus.
I had so much trouble with other programs...

Forum: Equipment Discussions

24-06-2010, 04:05 PM

Replies: 63

Canon TC-80N3 Remote

Views: 1,880

Posted By tempestwizz

As another who has bought the genuine article, I...

As another who has bought the genuine article, I have had faultless service for somehwere near 4 years now. I have changed the battery once in that time. I'm expecting to change it again soon. It has...

Forum: Equipment Discussions

12-05-2010, 01:20 PM

Replies: 31

Focal length and Focal ratio - test my sanity

Views: 1,702

Posted By tempestwizz

If you are talking about extended objects, ie...

If you are talking about extended objects, ie anything but stars, the most of the above logic holds true.
Stars however are different, since depite their apparen brightness and size, they are truly...

Forum: IceTrade Archives

06-05-2010, 09:41 AM

Replies: 1

[SOLD] Meade DSI Pro Monochrome

Views: 303

Posted By tempestwizz

PM Sent re purchase.

PM Sent re purchase.

Forum: IceTrade Archives

30-03-2010, 05:27 PM

Replies: 2

[SOLD] "Lunt" Solar Telescope

Views: 756

Posted By tempestwizz

Lloydysun. Have not heard from you regarding this...

Lloydysun. Have not heard from you regarding this scope. Is it still for sale? Grateful you respond to my PM
Brian C

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