Sightmark

Sightmark Ghost hunter Gen 1 2×24 Night Vision Scope

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  • Regular price $359.99


The Ghost hunter from Sight mark is a rifle-scope designed for observation and shooting at nighttime. This unit operates in both Passive mode (No IR) and Active mode (IR).

The Infrared illuminator is recommended for conditions with low ambient lighting or in total darkness. This unit comes standard with 2x  magnification ideal for short to medium distance shooting and target accusation.

This unit does not come with aiming reticle and will require a co-witnessed scope or red-dot to provide sighting.

A standard 1/4" camera tripod mount is provided for attachment on standard USGI mounts or regular camera tripods for static observation.

The manufacturer recommends additional IR illuminator * Sold separately to be used with this product for extending the usable range.

Devices comes with the following:
-Carrying Case
-Picatinny mount 
-Cleaning Cloth
-Instruction Manual

Specification
Generation: 1
Image intensifer: EP-33U
Country of origin: Russia
Magnification: 2X
Objective Lense diameter: 24mm
Field of view: 25°
Field of view minimum at 100M: 44m
Minimum focusing distance: 1M
Eye relief: +/- 5
Resolution: 36 ln/mm
*Maximum detection range: ~120 M
Power source: x2 AA Batteries
Battery life Active IR: 20 hours
Battery life Passive: 72 hours
Mounting solution: Tripod mount 1/4" 
Operating temperature: -20 to 40°c
Dimensions: 138mm x 57mm x 47mm
Weight: 250g

*Detection range is defined at the maximum distance the user can det4ect objects and their details. This is tested at 0.05lx with no cloud or fog. 
Detection range is affected by target object size , ambient light and atmospheric and weather conditions (Ex. Fog, Snow, Rain). This provided range is a approximation.

Additional Reading
Generation 1 image intensifiers amplify ambient light around 1000x.
Typically this units will have fish eye distortion around the edges of the image.  Gen 1 tubes generally do not have Bright light cutoff due to the fact the tubes retains a charge even after power is cut off.






lx= Lux (Unit of light measurement)

Note Human eye comparison is approximate. Natural night-vision differs from person to person with more humans becoming night blind all together due to constant exposure from artificial lighting in urban settings.

Light level 0
Conditions:  Twilight to Dark twilight
 (10.8 lx - 1.08lx)

Human Eye: The human eye un-adjusted to the dark will fail to see anything.
Properly adapted to the dark the human eye is still usable at short to medium ranges. Targets can be identified and colours and details can be made out.

Night-vision: It is too bright for non auto-gated night vision devices.

Light level 1
Conditions: Full Moon
(1 lx to 0.108lx)

Human eye: The human eye un-adjusted to the dark will fail to see anything.
Properly adapted to the dark the human eye is still usable at short to medium ranges.

Night-vision:  First generation night vision devices produce the best image quality at this light level, however when compared to the night adapted human eye the information available still pails in comparison. The night adapted eye can still see in colour, some better than others.

Light level 2
Conditions: Half Moon
(0.04lx)

Human eye: The human eye un-adjusted to the dark will fail to see anything.
Properly adapted to the dark the human eye is still usable at short ranges.
But will not be able to distinguish colours.
 

Night-vision:  Quality first generation night vision devices will provide a edge for shooting at this light level in comparison to the naked eye. More information is available from the Night-vision device than from naked eye alone.

Light level 3
Conditions: Quarter Moon
(0.0108lx) 


Human eye: The human eye un-adjusted to the dark will fail to see anything.
Properly adapted to the dark the human eye will struggle to make out any images at any distances. However with the use of peripheral of vision can detect movement.
 

Night-vision:  Gen 1 will fail to provide a useful image at this light level without additional infrared illumination. Higher quality Gen 1 devices may produce a useful image.

This is typically where Cascade, Gen 2 provides the best image quality. 


Light Level 4 (0.0011lx)
Conditions: Starlight

Human eye:  Struggles to make out any image at any distance

Night-vision: At this light level all Gen 1 devices will fail to provide any usable image. Cascade will struggle to make out a image and will not be usable past this light level  Gen 2 will struggle but still provide a usable image.
Any light level beyond this point is beyond the ability of this device without IR.