The Sun, March 23, 2023, 11:10
Equipment:
-Celestron 102 SLT telescope (optical tube)
-Celestron Nexstar SE mount
-Lacerta Herschel prism
-ND3 filter
-Baader Solar Continuum filter
–ZWO ASI 183MC camera
Stacking of 250 frames.
The Sun, March 23, 2023, 11:25
Equipment:
-Coronado PST H-alpha 40 mm telescope
-Sky-Watcher AZ-GTi mount
-Deepsky IR-cut filter
-QHY5III178m camera.
Stacking of 100 frames.
I received for test Barlow lens Svbony SV216. The Barlow lens is an optical accessory that allows you to increase the focal length of the telescope several times. It can be used both for visual observations and for astrophotography. The manufacturer claims consistent 2x magnification, fully multi-coated 4-element construction, blackened lens ends, a flat field of view, and a 1.25″ fit with M28.5 x 0.6 filter threads.
SVBONY SV216 1.25″ 2x Barlow lens
However, constant magnification implies another important property – telecentricity, that is, this Barlow lens does not change the slope of the rays coming from the lens. The telecentric Barlow lens cannot be “overclocked” by an additional sleeve, does not increase eyepiece eye relief, introduces less distortion and works better with wide-angle eyepieces.
Specs
| Brand | SVBONY |
| Model | SV216 |
| Barrel Size | 1.25 inch |
| Magnification Factor | 2x |
| Number of Lens Elements | 4- Elements |
| Lens Coatings | Fully multicoated |
| Outside Length of Upper Body | 2.34inch / 59.5mm |
| Insertion Depth | 1.55inch /39.5mm |
| Max Diameter Excluding Thumbscrew | 1.73inch / 44mm |
| Net Weight | 7.72oz / 219g |
| Filter Threads | M28.5×0.6 |
| Barrel Type | Straight Barrel |
| Barrel Material | Stainless Steel |
| Number of Thumbscrew | 3PCS |
| Thumbscrew Thread Specification | M3x10 |
| Compression Band/Ring in Eyepiece Holder | Yes |
The Sun, March 13, 2023, 15:21
Equipment:
-Orion Observer 80 ST EQ telescope (OTA)
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Baader Solar Continuum filter
-ND3 filter
-QHY5III178m camera.
Stacking of 250 frames.
The Sun, March 13, 2023, 15:23
Equipment:
-Orion Observer 80 ST EQ telescope (OTA)
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Antlia CaK 3nm 393.3nm filter
-ND96-09 filter
-QHY5III178m camera.
Stacking of 250 frames.
The Sun, March 8, 2023, 09:00
Equipment:
-Coronado PST H-alpha 40 mm telescope
-Sky-Watcher AZ-GTi mount
-Deepsky IR-cut filter
-QHY5III178m camera.
Stacking of 250 frames.
The Sun, March 8, 2023, 09:06
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Baader Solar Continuum filter
-ND3 filter
-QHY5III178m camera.
Stacking of 250 frames.
The Sun, March 8, 2023, 09:08
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Antlia CaK 3nm 393.3nm filter
-ND96-09 filter
-QHY5III178m camera.
Stacking of 250 frames.
Colorful Moon, March 7, 2023, 22:30-22:50
Equipment:
-Svbony MK105 telescope
-Sky-Watcher AZ-GTi mount
-ZWO IR-cut filter
-Svbony SV705C camera
Processing: panorama from 4 frames, Autostakkert (100 frames from 2700), AstroSurface. Scale 50%.