Chinese 150X1200 achromat refractor with chromacor

[royalla]

Chinese 150X1200 achromat refractor with chromacor corrector, mounting rings and finderscope. The chromacor corrector greatly improves the optical performance. I would prefer for it to be picked up in the Sydney, Australia area or I can deliver it by car within the Sydney, Australia and surrounding area. Otherwise it will have to be freighted within Australia. $900. The eyepiece in the picture is not included.

[royalla]

As I wrote, the chromacor greatly improves the optical performance.

[mswhin63]

Is this a no name brand, or does it have a name?

[royalla]

Synta is the brand, made in China.

[g__day]

As queried - is it a single lens or a doublet and against what measure does it significantly improve optical performance - single lens performance or double lens performance?

Also what is the weight and balance point if you don't mind me asking?

Thanks, Matt

[DavidU]

I hope i'm not butting in but the chromacor greatly reduces chromatic aboration mainly in the blue/violet spectrum. If i had a spare $1k i would snap this up.
Here is a spot diagram with (top) without (bottom) a Chromacor.
http://astrosurf.com/luxorion/Documents/chromacor-150f8-spot.gif

[dannat]

Matthew the tube weighs about 8kg having had one, it is quite front lens heavy (it's a doublet), balance point is about 35% front front element.
Some people worried about the price should check the chromacor prices, same as a new OTA at Andrews. On CN users have said it cause the scope to perform like a triplet

I have one question for the owner, is it a chroma or I or II?

[royalla]

I've been out of this field for the past 3.5 years and I'm now trying to sell off astronomy equipment that I had before this. I purchased this telescope combination second hand when I was living near Canberra pre-2005 from someone living nearby and I don't know much about the chromacor itself other than what the photograph says:

Chromacor-01
ARIES
Ukraine

[brian nordstrom]

Hi Bill I have a Saxon eg Synta 150mm f8 Acromat , with a fitted chromacor and the differance between a standard Achromat like ours and an Achro like ours fitted , properly is like spending 5k to 10k on an AP or TAK APO for about 1500 dollars .
I know this as a friend has an AP 152 f8 starfire ( beautiful scope ) and he cant believe the views in mine with the chromacor ..
Check astromart , a member there has been looking for one for a while .
As David U said snap this guys ! these are really good and they are not made any more .
Brian..

[royalla]

Thanks Brian. I'm also advertising on Astromart and I've had offers to buy just the chromacor corrector there but I'd like to sell both the chromacor and the telescope together.

Bill Alford