Sky-Watcher Honders-HAC125DX (EQ-AL55i) Advanced Catadioptric Minigraph
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Designed for fast, wide-field deep-sky imaging, the Sky-Watcher Honders-HAC125DX is a 125mm f2 catadioptric astrograph with a 250mm focal length. In use, the speed is immediately apparent. Short exposures pull in clean nebula detail without guiding, and the compact tube stays easy to balance on lightweight mounts. The revised rear primary focuser feels more controlled, especially when fine-tuning focus with small-sensor cameras during cold sessions.
Sky-Watcher Honders-HAC125DX (EQ-AL55i) Advanced Catadioptric Minigraph Key Features:
- Compact 125mm f2 catadioptric astrograph for ultra-fast deep-sky imaging
- 250mm focal length captures wide nebula and star field compositions
- Honders hybrid optical design maximises light throughput and sharpness
- Rear primary mirror focuser improves camera compatibility and focus control
- 16mm image circle suits modern small-sensor astro cameras
- Mangin mirror with RAQ coatings improves contrast and reflectivity
- HTMC-coated corrector maintains clarity across the field
- Collimatable primary mirror cell supports long-term optical alignment
- Lightweight 3.82kg tube suits portable equatorial mounts
- Supplied tube rings and dovetail simplify mounting and setup
FAQs:
Do I need autoguiding with the HAC125DX?
In many setups, no. The f2 focal ratio allows very short exposure times, reducing the impact of tracking errors. With a well-aligned portable mount, users often capture sharp data without guiding, especially with lightweight cameras.
Which camera types work best with the 16mm image circle?
The 16mm image circle pairs well with modern small-sensor astronomy cameras such as those using IMX533 or IMX585 sensors. These sensors sit comfortably within the corrected field, helping maintain sharp stars across the frame.
How is focusing handled compared to the original HAC125?
The HAC125DX uses a rear primary mirror helical focuser rather than the original design, making fine focus adjustments easier when a camera is attached and increasing compatibility with a broader range of camera bodies and adapters.
Is the HAC125DX suitable for beginners?
Yes. While the optical design is advanced, the short focal length and fast optics make it forgiving to use. Setup is quick, exposures are short, and the lightweight tube fits smaller mounts, helping new imagers achieve reliable results sooner.
What accessories come with the telescope?
The telescope ships with tube rings, a dovetail bar, a dew shield, a 1.25-inch adaptor, and an M42x0.75 adaptor. Cameras and mounts shown in images are not included.
Product Specification
| Focal Length [mm] | 250 |
| Focal Ratio [f|] | 2.00 |
| Included Accessories | 1.25-inch adaptor, M42x0.75 adaptor, dew shield |
| Optical Tube Length [mm] | 400 |
| Optical Tube Weight [kg] | 3.82 |
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Your flexible credit options available
Interest Bearing
with a choice of repayment plans over 24 or 36 months 13.9% APR (representative)Buy now pay later
36 month loan with a six month deferral period, 18.9% APR (representative)Interest Bearing Finance
This option comprises term loan with a choice of repayment plans over:
- 24 months
- 36 months
The balance of the finance agreement is payable directly to Novuna Consumer Finance in equal monthly instalments by monthly direct debit. The direct debit payments will commence at the end of the first month following receipt of your goods. The interest rate charged is 13.9% APR (representative). Late payment and early repayment penalties apply; full details of these will be provided in the loan agreement pack.
For customers based in the Channel Island, please call us to apply for finance
| 24 Months | 36 Months | |
|---|---|---|
| Cash price | £1,378.00 | £1,378.00 |
| Deposit | £0.00 | £0.00 |
| Loan Amount | £1,378.00 | £1,378.00 |
| Monthly Instalment | 23 x £65.57 | 35 x £46.48 |
| Final Instalment | £65.57 | £46.48 |
| Total Amount Repayable | £1,573.68 | £1,673.28 |
| Representative | 13.9% APR | 13.9% APR |
Buy now pay later
The Buy Now Pay Later option comprises a 36 month loan following a six month deferral period.
During the six-month deferral period, it is possible to pay off the loan, either by way of a lump sum or in smaller amounts. If the loan is partially repaid within six months, the remaining interest will be adjusted to reflect the new balance. If the loan is fully repaid within the six-month deferral period, then no interest is payable, however, a £29 early settlement fee is payable in respect of repayments within these six months.
Following the six-month deferral period, Novuna Personal Finance will initiate a monthly direct debit payment for the remaining duration of the loan. Interest will be charged at a rate of 18.9% APR (representative) on outstanding balances (backdated to the first date of the loan). Novuna Personal Finance will send a reminder letter approximately one month before the six-month deferral period is due to elapse.
For customers based in the Channel Island, please call us to apply for finance
| Balance settled in full within the six month deferral period | Balance NOT settled in full within the six month deferral period | |
|---|---|---|
| Cash price | £300 | £300 |
| Deposit | £0 | £0 |
| Loan Amount | £300 | £300 |
| Settlement fee | £29 | £0 |
| Settlement payment | £329 | - |
| Monthly Instalment | - | 36 x £11.57 |
| Total Amount Repayable | £329 | £416.52 |
| Representative | 18.9% APR | 18.9% APR |