QHY Accessories Archives - Modern Astronomy

QHY Camera Tilter Plate

Bernard Karpinski — Wed, 09 Jul 2025 15:20:13 +0000

QHY Camera Tilter Plate Features

With a rear adjustment design, even after installing a filter wheel, it can be easily adjusted and is suitable for most astronomers using the combo of mono camera+ filter wheel.

We provide six sets of adjustment points. You can choose either a three-point adjustment (equilateral triangle arrangement) or a four-point adjustment (rectangle arrangement).

QHY Camera Tilter Plate Compatible Models

QHY600PH-SBFL

QHY268M all versions

QHY268C（short back focal length version after 2022）

PS: The adapter can work with QHY533 in theory, but this camera with a small sensor is used mostly by beginners, it is not recommended to use the adapter with it.

Unchanged Original Back Focal Length

This tilt adjustment adapter is simple to install. Use a screwdriver to remove the original front end of the camera and replace it with the tilt adjustment adapter. Note that removing the default front end also means that the factory focal plane calibration is invalidated and you will need to calibrate the focal plane by yourself.

Again, this tilt adjustment adapter is perfectly compatible with the above models, and after replacing the original front end, the focal length increment will not change, so you can still keep the original adapter configuration, or adjust the adapters according to the standard adapter installation instructions.

Appendix: Tilt Adjustment Introduction

Introduction of Tilt Adjustment

Tilt adjustment is to make the camera sensor square to the whole optical system (optical axis). We hope what follows may help you.

For most amateur-level astrophotographers, Tilt adjustment is very difficult, so it is not recommended for beginners to adjust on their own, including QHY’s newly released tilt adjustment adapter, which is only recommended for astronomers with experience in tuning equipment. Fortunately, all QHYCCD cameras have been calibrated by professional high-precision instruments before leaving the factory.

S0 why the tilt adjustment structure is still retained? This is because not only the focal plane need calibration, the optical axis of the telescope also needs to be accurate. For example, a poorly calibrated optical axis, minor deformations caused by the unstable structure of the scope or by overloaded equipment, the use of adapters of poor quality, can all lead to problems with the entire optical system. We cannot ensure the stability of the whole optical system, so we offer some tilt adjustment methods for our users.

Before tilt adjustment, please make sure that the telescope’s optical axis is adequately calibrated. Besides, we recommend that you choose equipment with a higher optical tolerance. we do not recommend telescopes with vary small focal ratio. Though they can achieve “fast” capture, whether reflector or refractor, the optical axis calibration for focal ratio below f/4 is difficult.

Several Methods of Tilt Adjustment

1. Adjustment with copper foil (applicable to most equipment): After obtaining the distance and direction of the tilt position of the focal plane, copper foil is placed on the relatively lower part. Usually, the thickness of the copper foil is between 65um and 100um, and it can be adjusted with a maximum precision of 20-30um.

2. Adjustment with screws (Applicable to QHY268/QHY533/QHY600PH-SBFL and other products with the new front end): Loosen the 6 cross screws on the top end of the camera, and install a hexagonal socket bolt at the recessed corner of the focal plane measured by the software to elevate this corner. Then tighten the 6 cross screws and verify again with the focal plane analysis software.

3. Adjustment with QHY tilt adjustment adapter (additional purchase required): This adapter can replace the original front end of your camera, whlie the replacement does not affect the focal length. With a rear adjustment design, even after installing the filter wheel, it can be easily adjusted and is suitable for most astronomers.

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miniCAM8M Deep Sky Filter Set

Bernard Karpinski — Tue, 08 Jul 2025 14:58:11 +0000

QHY miniCAM8M Deep Sky Filter Set

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1.8m USB3 Cable (A-B)

Bernard Karpinski — Mon, 25 Mar 2024 14:48:30 +0000

High quality 1.8m USB3 Cable (A-B) for QHY cameras and many others.
Suitable for applications which call for a quality (A-B) printer type USB3 cable.

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Clamp Ring for QHY Cameras

Bernard Karpinski — Mon, 25 Mar 2024 11:44:36 +0000

Clamp Ring for QHY Cameras – fits QHY268M, QHY268C, QHY294M and QHY294C, has 1/4″ tripod threads on both base and top. Can be used with our Mini Dovetail for direct use on a mount with a Vixen style saddle. A QHY Adapter Kit B2 / 020071 can be added to enable the use of Canon EF lenses on the camera body, as long as appropriate spacing is maintained for infinity focus.

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QHYCCD QHYOAG-L

Bernard Karpinski — Mon, 18 Mar 2024 20:27:54 +0000

The main purpose of the QHYCCD QHYOAG-L is to use the same optical path as the main camera. This avoids the problem of differential deflection that can occur when using a separate optical system for guiding. This method provides more accurate guiding and sharper images.

QHYCCD QHYOAG-L includes a precision 1.25-inch helical focuser that accepts our QHY5II and QHY5III cameras. The focusing process is comfortable. After focusing, you can lock the focus mechanism with thumbscrews.

QHYOAG has three models. The major difference is its different diameter. The three model are QHYOAG-S, QHYOAG-M, QHYOAG-L. QHYOAG is a thin and solid design. The OAG main body is just 10mm thick. Adding an M42 thread or M54 adapter ring adds only 3mm for a total thickness of 13mm. There are six 3mm through holes in the OAG for direct connection to the QHYCFW and QHY A Series cameras

There is a focuser in the QHYOAG. It is for the focus adjustment of the guider. There is a thumb to lock the position. When focusing please loose this thumb. After focusing get well, lock it. Please do not move the focus ring when in lock status to avoid the damage. When it is locked, you will still find the focus ring can be rotate a little. This is normal and the focus is not changing.
The light patch hole of the QHYOAG is 7mm for the guider camera.

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QHYCCD QHYOAG-M Pro

Bernard Karpinski — Tue, 12 Mar 2024 21:42:00 +0000

QHYCCD QHYOAG-M Pro

Unlike external guiding arrangements, when using a QHYCCD QHYOAG-M Pro, the guiding camera and the imaging camera share the field of view of main optical system. If a user’s OTA has a long focal length, and the environment is not ideal, there will often be fewer stars suitable for guiding to be found in the FOV. One way to improve the chance of finding a good guide star is to use a guide camera with a larger sensor. For example, guide cameras like the QHY5III200M or the QHY5III585C have a FOV that is 2-4 times larger than that of smaller cameras typically sold as guiders. This larger FOV naturally allows you to capture more stars, essentially solving the issue of no or few stars available to guide the image.

In order for a large-sensor guide camera to fully perform to its potential in an OAG, a prism large enough to allow illumination of the larger sensor is needed to avoid severe vignetting. The new QHYOAG-M Pro uses a new wider prism to better accommodate larger sensor guide cameras. The prism size of the standard QHYOAG series is about 8 x 8mm, while QHYOAG-M Pro is 10 x 14mm.

When the QHY5III174M is connected to the older version of QHYOAG, there is severe vignetting (Image 1, below). In contrast, connected to the OAG Pro in the same optical system, there’s only a small amount of darkening occurs at the edges, which won’t affect guiding at night (Image 2, below).

Combos and Connections

The QHYOAG Series directly attaches to the camera or filter wheel with six screws, ensuring a solid, parallel and reliable mechanical connection. At the same time, various standard and optional QHY accessories can be used to realize a variety of structural combinations.

Below are some typical connection examples. Now Adapter B1 Kit is included in each package of QHY268M and QHY600M-PH SBFL. Adapter G1 Kit is included in each package of QHY268C and QHY600C-PH SBFL.

QHYOAGM-Pro

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QHY 020089 Spacer Set

Bernard Karpinski — Wed, 06 Mar 2024 17:32:05 +0000

The QHY 020089 Spacer Set is a set of five fine adjustment spacer rings (optical thickness of 0.5mm, 1mm, 2mm, 3mm, 4mm, 7mm) and a 4mm M54 female camera adapter.

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QHY Combo D1

Bernard Karpinski — Wed, 06 Mar 2024 13:51:47 +0000

QHY Combo D1: Connecting MPCC with 55mm BFL and M48 interface

55mm backfocus length achievable with the kit
Kit Includes:
- 1x 5mm M54 / M48 Adapter
- 1x QHY 2.5mm 2″ Filter Fixer #1932780
- 1x 10mm Spacer
- 1x 14mm Spacer
- 7x 36mm M3 screws
- The Kit is supplied as a standard accessory with QHY600C or QHY268C (version before 2023)

Compatible QHY cameras are: