Introduction | About Vespera Pro | Look | Sensor, Pixel Data, Field of View, Image Size (Pixels) | Visited Sky Objects | First Experiences and Photos | Photo Attempts | First Conclusions | Links || Appendix: Technical Data | Appendix: Comparison of the Vaonis Vespera, Vaonis Vespera Pro, and the Unistellar eVscope (2) | Appendix: Look | Appendix Photos
On this page, I provide some information about my future electronic 2" refractor telescope Vaonis Vespera Pro 50 mm/250 mm (f/5). I pre-ordered it on June 14, 2023; shipment was promised for May 2024. And that was indeed the case. UPS initially reported a delivery of my Vespera Pro on May 3, 2024, but after two sort erors it only arrived on May 8, 2024. Not too bad!
Note:
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Photo: My Vaonis Vespera Pro (May 8, 2024)
Vespera Pro is an update of the Vespera electronic telescope from the French company Vaonis (in the meantime there appeared a version limited to 222 samples called Passenger and the successor model Vespera II). It has been available for pre-order on the Vaonis Website since mid-June 2023. Delivery of the telescope was promised to take place in May 2024 for the first pre-orders and started in the beginning of May 2024. Later pre-orders are to be delivered from July 2024 on; the price has also been gradually increased.
In the following, I try to collect information about the Vespera Pro as far as I could get them from the Vaonis Vespera Pro product page or other sources and from my experiences with my own sample (particularly the unboxing photos).
Vespera was meant to become a small and affordable version of Stellina. The Vespera Pro is an evolution of the Vespera with some changes from the original Vespera (sensor, focal length, aperture ratio). It also has some "pro features" that the other Vespera models do not offer.
Thus, the Vespera Pro is also a refractor, the lens again is a quadruplet with 50 mm aperture (like binoculars), but with a focal length of 250 mm (aperture ratio f/5) and with a specially designed "pro" field corrector. It looks more or less identical to the other Vespera models, has the same size and weight as the other models.
The Vespera Pro uses a Sony IMX676 Starvis 2 sensor with a resolution of 3536 x 3536 pixels (12.5 MP). This delivers a field of view of 1.6° x 1.6°, which makes also the Vespera Pro a small rich field telescope. Its image scale or sampling rate is 1.65"/pixel, which is much better than that for the original Vespera (2.99"/pixel). With a weight of 5 kg and a height of 40 cm, the Vespera Pro has remained light and compact, making it an ideal travel telescope. The internal battery lasts for 11 hours, which is quite a long time. I decided to go for the simple package without an additional high tripod (2000 EUR instead of 2500 EUR), which I had already bought.
Here are some technical data:
Technique |
Optics |
Mount |
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Sensor
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Other
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More on this telescope on the Vespera Pro product page.
Especially since the introduction of the Mosaic mode, I am very fond of my Vespera. The appeal of the Vespera Pro for me was that the new sensor has a higher resolution and its field of view is 1.6° square. This makes the Vespera Pro almost a rich-field telescope, especially in mosaic mode (maximum 2.6° squared).
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Cyril Dupuy, founder and CEO of Vaonis, in an interview |
The manufacturer's team |
(Photos from the Vaonis-Website (EN); permission for use granted)
Vaonis is a French company based in Montpellier, France, that designs and manufactures telescopes and accessories. The company was founded in 2016 by Cyril Dupuy, a young start-up entrepreneur, after obtaining his Bachelor in Optics and Aerospace. From his experience of using different telescopes with complex installation, long user guides and recurring breakdowns, he imagined and designed Stellina, the world's first all-in-one telescope connected to a mobile app. Vaonis' products are designed and developed by specialists in optics, mechanics, electronics, material and ergonomics, giving special attention to its design, quality and safety. (From the Vaonis Website, adapted)
Here I present photos of the unboxing, the telescope itself, and its initially delivered and bought accessories. Since much of it looks like the original Vespera, I will show less photos here.
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USB charger and (extra) USB-C charging cable | USB charger and (extra) USB-C charging cable |
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USB charger |
Ditto |
Vespera Pro charging |
The Vespera Pro uses the new sensor Sony IMX676 (CMOS; Starvis 2), with a used pixel size of about 12.5 megapixels, or 3536 x 3536 pixels (H/V). The pixel size is 2.0µm (quadratic pixels).
With this, all sizes are known to calculate the field of view of the Vespera, which amounts to 1.6° x 1.6°.
The following table shows the Vespera Pro, Vespera, eVscope, and eVscope 2 in comparison with my current telescope (plus the C8 that I owned) tubes at a selection of cameras that I own(ed):
Field of View |
IS* | |||||||||
Telescope | Reducer | Focal Length |
Aperture | f | ASI224MC* | ASI294MC | ASI462MC* | Atik Infinity* | Remarks | |
PS 72/432 | --- | 432 | 72 | 7 | 0.65° x 0.48° | 2.54° x 1.73° | 0.74° x 0.42° | 1.19° x 0.89° | The largest FOV of my tubes | |
C5 | --- | 1250 | 127 | 10 | 0.22° x 0.17° | 0.88° x 0.60° | 0.26° x 0.15° | 0.41° x 0.31° | FOV like C8 with reducer | |
C5 | f/6.3 | 787.5 | 127 | 6.3 | 0.36° x 0.17° | 1.40° x 0.95° | 0.41° x 0.23° | 0.65° x 0.49° | FOV a little smaller as with TLAPO1027 | |
C8* | --- | 2032 | 203 | 10 | 0.14° x 0.1° | 0.54° x 0.37° | 0.16° x 0.09° | 0.25° x 0.19° | The smallest FOV | |
C8* | f/6.3 | 1280 | 203 | 6.3 | 0.22° x 0.16° | 0.86° x 0.58° | 0.25° x 0.14° | 0.4° x 0.3° | FOV like C5 | |
TLAPO1027 | --- | 714 | 102 | 7 | 0.39° x 0.29° | 1.54° x 1.05° | 0.45° x 0.26° | 0.72° x 0.54° | FOV a little larger than for C5 with reducer | |
in Degrees | in Minutes | |||||||||
eVscope* | --- | 450 | 114 | 4 | 0.61° x 0.46° | 36.7' x 27.6' | 1.72 | Same sensor as ASI224: Sony IMX224 | ||
eVscope 2* | --- | 450 | 114 | 4 | 0.78° x 0.57° | 47' x 34' | 1.33 | New sensor: Sony IMX347 | ||
Vespera* | 200 | 50 | 4 | 1.6° x 0.9° | 96' x 54' (ca.) | 2.99 | Same sensor as ASI462: Sony IMX462 | |||
Vespera Pro | 250 | 50 | 5 | 1.6° x 1.6° | 96' x 96' (ca.) | 1.65 | New sensor: Sony IMX676 |
*) No longer in my possession
*) IS = image scale: describes the relative sizes of objects at 1:1 pixels (the larger the number, the smaller the objects)
Sony's IMX676 sensor can be used with 3536 x 3536 pixels (12.5 MP; recommendation by Sony). However, the resulting photos may often be somewhat smaller because they are automatically cropped, probably in response to field rotation.
The Vespera Pro has nearly double the FOV of the Vespera (calculated with astronomy.tools):
Vespera Pro in red (Custom Camera)
Simulation of the FOV by Vaonis, rotated for 180° (product page for Vespera Pro):
And another comparison with the Sky-Watcher EvoGuide 50ED (calculated with astronomy.tools):
Vespera Pro in red (Custom Camera)
4.18° x 2.45° or 3.2° x 3.2°
These are the very first DSO (during the first two months) and objects that I observed with my Vespera Pro:
For space reasons, I moved my first experiences with and photos taken with my Vespera Pro to a seperate page.
In preparation
Vespera | Vespera Pro | eVscope | eVscope 2 | |
Weight | 5 kg (11 lbs) | 5 kg (11 lbs) | 9 kg (19.8 lbs) including tripod |
9 kg (19.8 lbs) including tripod |
Height | 40 cm (15 in) | 40 cm (15 in) | 65 cm (25.5 in) | 65 cm (25.5 in) |
Width | 20 cm (8 in) | 20 cm (8 in) | 23 cm (9 in) | 23 cm (9 in) |
Depth | 9 cm (3.5 in) | 9 cm (3.5 in) | n.a. | n.a. |
Telescope type | Refractor | Refractor | Reflector (Newtonian) | Reflector (Newtonian) |
Lens/Mirror | Apochromatic Quadruplet | Apochromatic Quadruplet | mirror | mirror |
Lens/Mirror special features | Extra low dispersion S-FPL52 equivalent (ULD) with lanthanum glass | Extra low dispersion S-FPL52 equivalent (ULD) with lanthanum glass | BK7 glass mirror | BK7 glass mirror |
Aperture | 50 mm | 50 mm | 112 or 114 mm | 112 or 114 mm |
Focal length | 200 mm | 250 mm | 450 mm | 450 mm |
Focal ratio | F/4 | F/5 | F/4 | F/4 |
Field of view | 1.6° x 0.9° | 1.6° x 1.6° | 0.61° x 0.46° (36.7' x 27.6') | 0.78° x 0.57° (47' x 37') |
Mount | Alt-azimuth | Alt-azimuth | Alt-azimuth | Alt-azimuth |
Field derotator | no, done in software | no, done in software | no, done in software | no, done in software |
Image sensor | Sony IMX462 | Sony IMX676 | Sony IMX224 | Sony IMX347 |
Resolution | 1920 x 1080 (2 MP) | 3536 x 3536 (12.5 MP) | 1280 x 960 (1,2 MP) / 2560 x 1920 (2.4 MP) scaled (EV mode) | 2048 x 1536 (3.2 MP), 3200 x 2400 (7.7 MP) scaled (EV mode) |
Sensor size | 1/2.8" | 1/1.6" | 1/3" | 1/1.8" |
File formats | JPEG, TIFF, FITS (TIFF/FITS in 16 bits) | JPEG, TIFF, FITS (TIFF/FITS in 16 bits) | PNG | PNG |
USB port (pictures download) | no (with Wi-Fi) | no (with Wi-Fi) | no (with Wi-Fi) | no (with Wi-Fi) |
Autofocus | yes | yes | no | no |
Light pollution filter | Optional | Optional | no, done in software | no, done in software |
Dew control | Yes as soon as the (optional) sensor is installed | yes | no | no |
Temperature/humidity sensor | Optional | yes | no | no |
Battery type | Integrated | Integrated | Integrated | Integrated |
Battery life | up to 8 h | up to 11 h | up to 10 h | up to 10 h |
Water resistance | IP43 | IP43??? | n.a. | n.a. |
Multi user mode | up to 8 users | up to 8 users | yes (number unknown) | yes (up to 10 users) |
Number of objects in data base | 300+ (July 2023) 4000 (extended) |
300+ (July 2023) 4000 (extended) |
> 5000, > 120 with descriptions | > 5000, > 120 with descriptions |
Object access via coordinates | yes | yes | yes | yes |
Solar pointing | yes (with optional filter) | yes (with optional filter) | yes (with optional filter) | yes (with optional filter) |
Connected battery | possible | possible | possible | possible |
Connection to Wi-Fi hotspots | no | no | no | no |
Scheduling of observations | yes | yes | no | no |
Expert mode (camera control) | yes | yes | manual pre-processing (brightness, background) already available in 2020 | manual pre-processing (brightness, background) |
HDR Image processing | yes | yes | no | no |
Pictures stocking in the app | up to 100 images | up to 100 images | no, on the smartphone depending on its memory size | no, on the smartphone depending on its memory size |
Mosaic mode | 3.2° x 1.8° (4 x sensor field) at maximum, up to 8 MP | 3.2° x 3.2° (4 x sensor field) at maximum, up to 50 MP | no | no |
Here I present photos of the Vespera Pro that Vaonis published.
Photo: Vaonis Vespera Pro (mid-July 2023) | Photo: Vaonis Vespera Pro (May 2024; larger) |
As I now can take photos of the Vespera Pro on my own, I will not present further photos published by Vaonis.
Here I present two photos taken with the Vespera Pro that Vaonis published. Probably, the photos were post-processed.
Photo: NGC 6992/5 (Eastern Veil Nebula) photographed with Vespera Pro - the very first photo taken with the Vespera pro that Vaonis published (larger)
Photo: M 8 (Lagoon Nebula) taken with the Vespera Pro (from Vespera Pro product page, slightly cropped)
30.06.2024 |