*
Friday: Having fitted the baffle tree and replaced the heavy tailpiece I could fit the iStar 150/10 H-alpha objective.By sheer luck I found the focus suited the empty fittings for the PST H-alpha stack. [Image right]
The second [lower] image shows the full H-alpha stack.
The OTA was simply propped on a folding workbench with G-cramps for safety barriers against rolling off. There was some peripheral [blue] colour from zooming in Macro on my old TZ7 camera. I cropped this out of the image because it was invisible visually.
A 32mm EP provided a very pleasing views of 600 yard distant trees at 47x with little sign of false colour. Visually, it looked much brighter and sharper than this cropped, zoomed and enlarged image.At 75x [20mm EP] the image showed some royal blue, false colour. It is a dark, overcast day. So this should be allowed for in the [through the telescope] images.
Image right: The same set-up x47 but with the Baader 35nm CCD UV/IR filter fitted. Macro zoomed TZ7 camera. A Beloptik KG3 will join it to further protect the PST etalon from the heating effects of the 6" objective.A full aperture 160mm Baader D-ERF will sit in front of the objective lens. Until I have the D-ERF fitted, I cannot try the telescope on the non-existent sunshine. Teleskop-Service has just rung to confirm the D-ERF filter and holder are going into the post. Delivery is now expected on Tuesday 18th Feb.
*
No comments:
Post a Comment